SEC Info  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Workhorse Group Inc. – ‘10-K’ for 12/31/19 – ‘EX-101.DEF’

On:  Friday, 3/13/20, at 4:17pm ET   ·   For:  12/31/19   ·   Accession #:  1628280-20-3532   ·   File #:  1-37673

Previous ‘10-K’:  ‘10-K’ on 3/18/19 for 12/31/18   ·   Next:  ‘10-K’ on 3/1/21 for 12/31/20   ·   Latest:  ‘10-K’ on 3/12/24 for 12/31/23   ·   20 References:   

Find Words in Filings emoji
 
  in    Show  and   Hints

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 3/13/20  Workhorse Group Inc.              10-K       12/31/19   85:9.5M                                   Workiva Inc Wde… FA01/FA

Annual Report   —   Form 10-K   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   1.14M 
 2: EX-4.12     Instrument Defining the Rights of Security Holders  HTML     37K 
 3: EX-10.41    Material Contract                                   HTML     80K 
 4: EX-10.42    Material Contract                                   HTML    141K 
 5: EX-10.47    Material Contract                                   HTML    112K 
 6: EX-21.1     Subsidiaries List                                   HTML     21K 
 7: EX-23.1     Consent of Experts or Counsel                       HTML     23K 
 8: EX-31.1     Certification -- §302 - SOA'02                      HTML     27K 
 9: EX-31.2     Certification -- §302 - SOA'02                      HTML     28K 
10: EX-32.1     Certification -- §906 - SOA'02                      HTML     23K 
11: EX-32.2     Certification -- §906 - SOA'02                      HTML     23K 
17: R1          Cover Page.                                         HTML     82K 
63: R2          Consolidated Balance Sheets                         HTML    105K 
71: R3          Consolidated Balance Sheets (Parenthetical)         HTML     45K 
42: R4          Consolidated Statements of Operations               HTML     66K 
18: R5          Consolidated Statement of Stockholders' Equity      HTML     81K 
                (Deficit)                                                        
65: R6          Consolidated Statements of Cash Flows               HTML    132K 
73: R7          Consolidated Statements of Cash Flows               HTML     28K 
                (Parenthetical)                                                  
39: R8          Summary of Business and Significant Accounting      HTML     88K 
                Principles                                                       
21: R9          Inventory                                           HTML     39K 
43: R10         Revenue                                             HTML     39K 
24: R11         Property, Plant and Equipment, Net                  HTML     45K 
57: R12         Long-Term Debt                                      HTML     65K 
69: R13         Duke Financing Obligation                           HTML     26K 
44: R14         Mandatory Redeemable Series B Preferred Stock       HTML     32K 
25: R15         Income Taxes                                        HTML     95K 
58: R16         Fair Value Measurement                              HTML     44K 
70: R17         Stock Based Compensation                            HTML     90K 
45: R18         Recent Pronouncements                               HTML     28K 
23: R19         Stockholders' Equity                                HTML     54K 
54: R20         Related Parties                                     HTML     27K 
83: R21         Subsequent Events                                   HTML     25K 
36: R22         Other Income                                        HTML     51K 
31: R23         Other Transaction                                   HTML     27K 
55: R24         Summary of Business and Significant Accounting      HTML    145K 
                Principles (Policies)                                            
84: R25         Summary of Business and Significant Accounting      HTML     65K 
                Principles (Tables)                                              
37: R26         Inventory (Tables)                                  HTML     40K 
32: R27         Revenue (Tables)                                    HTML     34K 
53: R28         Property, Plant and Equipment, Net (Tables)         HTML     45K 
85: R29         Long-Term Debt (Tables)                             HTML     53K 
75: R30         Income Taxes (Tables)                               HTML     98K 
61: R31         Fair Value Measurement (Tables)                     HTML     60K 
22: R32         Stock Based Compensation (Tables)                   HTML     88K 
40: R33         Stockholders' Equity (Tables)                       HTML     45K 
74: R34         Other Income (Tables)                               HTML     49K 
59: R35         Summary of Business and Significant Accounting      HTML     43K 
                Principles (Details)                                             
19: R36         Summary of Business and Significant Accounting      HTML     37K 
                Principles - Estimated Useful Lives (Details)                    
38: R37         Summary of Business and Significant Accounting      HTML     30K 
                Principles - Warranty Accrual (Details)                          
72: R38         Summary of Business and Significant Accounting      HTML     48K 
                Principles - Earnings Per Share (Details)                        
64: R39         Inventory (Details)                                 HTML     40K 
81: R40         Revenue (Details)                                   HTML     30K 
49: R41         Property, Plant and Equipment, Net (Details)        HTML     48K 
30: R42         Long-Term Debt - Type (Details)                     HTML     42K 
35: R43         Long-Term Debt - Maturities (Details)               HTML     33K 
80: R44         Long-Term Debt (Details)                            HTML    143K 
48: R45         Duke Financing Obligation (Details)                 HTML     41K 
29: R46         Mandatory Redeemable Series B Preferred Stock       HTML     56K 
                (Details)                                                        
34: R47         Income Taxes (Details)                              HTML     42K 
79: R48         Income Taxes - Components of Loss Before Income     HTML     42K 
                Taxes (Details)                                                  
50: R49         Income Taxes - Reconciliation of Statutory Federal  HTML     42K 
                Income Tax (Details)                                             
67: R50         Income Taxes - Deferred Tax Assets and Liabilities  HTML     50K 
                (Details)                                                        
76: R51         Income Taxes - Unrecognized Tax Benefits (Details)  HTML     38K 
46: R52         Fair Value Measurement - Warrants (Details)         HTML     34K 
26: R53         Fair Value Measurement - Convertible Note           HTML     34K 
                (Details)                                                        
68: R54         Stock Based Compensation (Details)                  HTML     43K 
77: R55         Stock Based Compensation - Share Based              HTML     31K 
                Compensation Expense (Details)                                   
47: R56         Stock Based Compensation - Stock Option Activity    HTML     68K 
                (Details)                                                        
27: R57         Stock Based Compensation - Restricted Stock         HTML     48K 
                (Details)                                                        
66: R58         Stockholders' Equity (Details)                      HTML     82K 
78: R59         Stockholders' Equity - Warrants (Details)           HTML     48K 
33: R60         Related Parties (Details)                           HTML     37K 
28: R61         Other Income (Details)                              HTML     33K 
51: R62         Other Income - Narrative (Details)                  HTML     67K 
82: R63         Other Transaction (Details)                         HTML     41K 
60: R9999       Uncategorized Items - wkhs-20191231.htm             HTML     25K 
62: XML         IDEA XML File -- Filing Summary                      XML    143K 
52: XML         XBRL Instance -- wkhs-20191231_htm                   XML   1.64M 
56: EXCEL       IDEA Workbook of Financial Reports                  XLSX     80K 
13: EX-101.CAL  XBRL Calculations -- wkhs-20191231_cal               XML    188K 
14: EX-101.DEF  XBRL Definitions -- wkhs-20191231_def                XML    648K 
15: EX-101.LAB  XBRL Labels -- wkhs-20191231_lab                     XML   1.64M 
16: EX-101.PRE  XBRL Presentations -- wkhs-20191231_pre              XML    979K 
12: EX-101.SCH  XBRL Schema -- wkhs-20191231                         XSD    181K 
41: JSON        XBRL Instance as JSON Data -- MetaLinks              340±   504K 
20: ZIP         XBRL Zipped Folder -- 0001628280-20-003532-xbrl      Zip    553K 


‘EX-101.DEF’   —   XBRL Definitions — wkhs-20191231_def


This Exhibit is an XBRL XML File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- Copyright 2020 Workiva -->
<!-- r:d1d8f773-649c-4772-8160-eaf3e7613257,g:b9b6a558-4c74-45c1-8892-e2f06a30e877 -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
<link:roleRef roleURI="http://workhorse.com/role/CoverPage" xlink:type="simple" xlink:href="wkhs-20191231.xsd#CoverPage"/>
<link:definitionLink xlink:role="http://workhorse.com/role/CoverPage" xlink:type="extended" id="i9cba93f93f4a4277ad1462bf40dd51b9_6828e57e-22c6-478c-b350-2da7824ee9fc"/>
<link:roleRef roleURI="http://workhorse.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="wkhs-20191231.xsd#ConsolidatedBalanceSheets"/>
<link:definitionLink xlink:role="http://workhorse.com/role/ConsolidatedBalanceSheets" xlink:type="extended" id="ie4fa05b2f8e848c1a7c9398e0312b80b_ed0188e4-c80f-4781-8b22-ce7962acc3d3"/>
<link:roleRef roleURI="http://workhorse.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="wkhs-20191231.xsd#ConsolidatedBalanceSheetsParenthetical"/>
<link:definitionLink xlink:role="http://workhorse.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended" id="i93890fcf2d4948ea864a1720e6400ec7_f301e484-95d5-4e42-bfd8-3d9e38eeee71"/>
<link:roleRef roleURI="http://workhorse.com/role/ConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="wkhs-20191231.xsd#ConsolidatedStatementsofOperations"/>
<link:definitionLink xlink:role="http://workhorse.com/role/ConsolidatedStatementsofOperations" xlink:type="extended" id="i8f917ac26a4240b7a1dac70214a61eed_a612e5d1-8d85-4064-b266-f5293e592d49"/>
<link:roleRef roleURI="http://workhorse.com/role/ConsolidatedStatementofStockholdersEquityDeficit" xlink:type="simple" xlink:href="wkhs-20191231.xsd#ConsolidatedStatementofStockholdersEquityDeficit"/>
<link:definitionLink xlink:role="http://workhorse.com/role/ConsolidatedStatementofStockholdersEquityDeficit" xlink:type="extended" id="i6cbaadf430764334b3577bac2855a174_065dd991-0d4c-4ce2-b4ae-3b2759d310a8">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_bf1fcd06-4217-4ae7-9143-88f64baaf75a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_StockholdersEquity_bf1fcd06-4217-4ae7-9143-88f64baaf75a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_dd72c6f3-f118-4f8a-89b0-4744fda4826d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_SharesOutstanding_dd72c6f3-f118-4f8a-89b0-4744fda4826d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_875bb345-2fbd-4972-862d-176a13c16bc6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_875bb345-2fbd-4972-862d-176a13c16bc6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_c7baa6be-4c96-4434-b1a6-9c7f2a03b118" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_c7baa6be-4c96-4434-b1a6-9c7f2a03b118" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StockOptionsAndWarrantsExercised_40792543-bcb2-4599-a4e6-329e0f14918d" xlink:href="wkhs-20191231.xsd#wkhs_StockOptionsAndWarrantsExercised"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_StockOptionsAndWarrantsExercised_40792543-bcb2-4599-a4e6-329e0f14918d" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StockOptionsAndWarrantsExercisedShares_7dbfa156-c7c2-4af0-afb2-6eb86ccc5642" xlink:href="wkhs-20191231.xsd#wkhs_StockOptionsAndWarrantsExercisedShares"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_StockOptionsAndWarrantsExercisedShares_7dbfa156-c7c2-4af0-afb2-6eb86ccc5642" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ExchangeOfferWarrantsDeemedDividend_7422d070-7c8f-454e-9ec1-ede15eb7a03d" xlink:href="wkhs-20191231.xsd#wkhs_ExchangeOfferWarrantsDeemedDividend"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_ExchangeOfferWarrantsDeemedDividend_7422d070-7c8f-454e-9ec1-ede15eb7a03d" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueOther_9f2777e2-61cd-4153-b564-3ded0da8233b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueOther"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueOther_9f2777e2-61cd-4153-b564-3ded0da8233b" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesOther_2964d39b-4a29-4a84-bc94-277da4e4d10d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesOther"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesOther_2964d39b-4a29-4a84-bc94-277da4e4d10d" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StockIssuedDuringPeriodValueConversionOfAccountPayable_4ea515a6-a344-4bb3-b173-f9a848dc1ef0" xlink:href="wkhs-20191231.xsd#wkhs_StockIssuedDuringPeriodValueConversionOfAccountPayable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_StockIssuedDuringPeriodValueConversionOfAccountPayable_4ea515a6-a344-4bb3-b173-f9a848dc1ef0" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StockIssuedDuringPeriodSharesConversionOfAccountPayable_60c59f3f-c36d-48ed-adc5-878a746c9352" xlink:href="wkhs-20191231.xsd#wkhs_StockIssuedDuringPeriodSharesConversionOfAccountPayable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_StockIssuedDuringPeriodSharesConversionOfAccountPayable_60c59f3f-c36d-48ed-adc5-878a746c9352" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AdjustmentToAdditionalPaidInCapitalWarrantReclassification_8eb34a3f-8466-4126-8597-7959f8508c8f" xlink:href="wkhs-20191231.xsd#wkhs_AdjustmentToAdditionalPaidInCapitalWarrantReclassification"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_AdjustmentToAdditionalPaidInCapitalWarrantReclassification_8eb34a3f-8466-4126-8597-7959f8508c8f" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DeemedDividend_6584a6da-1bba-480c-9c8a-75d0305f9f28" xlink:href="wkhs-20191231.xsd#wkhs_DeemedDividend"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_DeemedDividend_6584a6da-1bba-480c-9c8a-75d0305f9f28" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DeemedDividendShares_564f1492-198a-474b-8ed7-f515b1a49c79" xlink:href="wkhs-20191231.xsd#wkhs_DeemedDividendShares"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_DeemedDividendShares_564f1492-198a-474b-8ed7-f515b1a49c79" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StockIssuedDuringPeriodValueOfWarrantsIssuedWithPreferredStock_83d06129-5aa3-4f36-81e6-19c9a0703407" xlink:href="wkhs-20191231.xsd#wkhs_StockIssuedDuringPeriodValueOfWarrantsIssuedWithPreferredStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_StockIssuedDuringPeriodValueOfWarrantsIssuedWithPreferredStock_83d06129-5aa3-4f36-81e6-19c9a0703407" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ValueOfWarrantsIssuedWithConvertibleNotes_00f5678f-b418-4d56-99db-8d40ef6f1890" xlink:href="wkhs-20191231.xsd#wkhs_ValueOfWarrantsIssuedWithConvertibleNotes"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_ValueOfWarrantsIssuedWithConvertibleNotes_00f5678f-b418-4d56-99db-8d40ef6f1890" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_PreferredStockDividendsCommonStockIssuedShares_8990f1db-3d4d-40ba-a4f4-8cdc820dc4b2" xlink:href="wkhs-20191231.xsd#wkhs_PreferredStockDividendsCommonStockIssuedShares"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_PreferredStockDividendsCommonStockIssuedShares_8990f1db-3d4d-40ba-a4f4-8cdc820dc4b2" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_PreferredStockDividendsCommonStockIssuedValue_189ba87f-80bc-4e9c-9355-a7bcb43a2df0" xlink:href="wkhs-20191231.xsd#wkhs_PreferredStockDividendsCommonStockIssuedValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_wkhs_PreferredStockDividendsCommonStockIssuedValue_189ba87f-80bc-4e9c-9355-a7bcb43a2df0" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_44f14df7-48bf-461b-969c-e999f0fdd901" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_44f14df7-48bf-461b-969c-e999f0fdd901" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_05b5c66d-4e84-4769-9452-f5eac7536840" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_05b5c66d-4e84-4769-9452-f5eac7536840" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_c4ab5962-99fd-484c-b896-38f0707feff2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_c4ab5962-99fd-484c-b896-38f0707feff2" xlink:type="arc" order="20"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_0bd48305-5dfe-4d83-bda3-8d4ed6519d2d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_NetIncomeLoss_0bd48305-5dfe-4d83-bda3-8d4ed6519d2d" xlink:type="arc" order="21"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_a9414538-17e6-4681-b04f-b53273c87d8a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_010d0032-a8fb-4784-9e90-1e7b430c155e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesOutstanding"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_5dc63f88-54d0-4825-8433-4c91500f5998" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_c38be44d-2b95-46f5-b8d7-c3289b55b6e8" xlink:to="loc_us-gaap_StatementTable_5dc63f88-54d0-4825-8433-4c91500f5998" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_95250a0e-8fdf-405f-b317-9f42d39fce63" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_5dc63f88-54d0-4825-8433-4c91500f5998" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_95250a0e-8fdf-405f-b317-9f42d39fce63" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_95250a0e-8fdf-405f-b317-9f42d39fce63_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_95250a0e-8fdf-405f-b317-9f42d39fce63" xlink:to="loc_us-gaap_EquityComponentDomain_95250a0e-8fdf-405f-b317-9f42d39fce63_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_b0418670-93b4-485d-bf95-10ca2f21562c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_95250a0e-8fdf-405f-b317-9f42d39fce63" xlink:to="loc_us-gaap_EquityComponentDomain_b0418670-93b4-485d-bf95-10ca2f21562c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_4cdd0c42-b240-4515-8ad5-e5b5cd1b8c53" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b0418670-93b4-485d-bf95-10ca2f21562c" xlink:to="loc_us-gaap_CommonStockMember_4cdd0c42-b240-4515-8ad5-e5b5cd1b8c53" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockMember_098e6d8a-f6ab-411b-8780-7ee933227c48" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b0418670-93b4-485d-bf95-10ca2f21562c" xlink:to="loc_us-gaap_PreferredStockMember_098e6d8a-f6ab-411b-8780-7ee933227c48" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_3e32d448-d18c-4fc3-ad2a-ef2f2ce6ca2b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b0418670-93b4-485d-bf95-10ca2f21562c" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_3e32d448-d18c-4fc3-ad2a-ef2f2ce6ca2b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_365fc255-25ce-4305-b23d-3bce22cb49f2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b0418670-93b4-485d-bf95-10ca2f21562c" xlink:to="loc_us-gaap_RetainedEarningsMember_365fc255-25ce-4305-b23d-3bce22cb49f2" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="wkhs-20191231.xsd#ConsolidatedStatementsofCashFlows"/>
<link:definitionLink xlink:role="http://workhorse.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended" id="i517dbfeb4e1f4f5baf24431a5b0183ab_a4dc56db-6402-42c6-a720-e5d224e5bf23">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_3d559d49-b95b-4bce-b765-e4334c493ff6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WarrantsToPurchaseCommonStock_cae360e4-f51c-40e8-9ede-d24581cb9cce" xlink:href="wkhs-20191231.xsd#wkhs_WarrantsToPurchaseCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_3d559d49-b95b-4bce-b765-e4334c493ff6" xlink:to="loc_wkhs_WarrantsToPurchaseCommonStock_cae360e4-f51c-40e8-9ede-d24581cb9cce" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StockIssuedDuringPeriodValueConversionOfAccountPayable_62cf7bf2-6d48-406b-b5e2-ca281ab66d16" xlink:href="wkhs-20191231.xsd#wkhs_StockIssuedDuringPeriodValueConversionOfAccountPayable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_3d559d49-b95b-4bce-b765-e4334c493ff6" xlink:to="loc_wkhs_StockIssuedDuringPeriodValueConversionOfAccountPayable_62cf7bf2-6d48-406b-b5e2-ca281ab66d16" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_88d38240-52be-437a-a48c-944434daf65b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_3d559d49-b95b-4bce-b765-e4334c493ff6" xlink:to="loc_us-gaap_StatementTable_88d38240-52be-437a-a48c-944434daf65b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementAxis_e092148a-fd66-4ef5-893f-8cc108bb2cb3" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_88d38240-52be-437a-a48c-944434daf65b" xlink:to="loc_wkhs_CreditAgreementAxis_e092148a-fd66-4ef5-893f-8cc108bb2cb3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementDomain_e092148a-fd66-4ef5-893f-8cc108bb2cb3_default" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_wkhs_CreditAgreementAxis_e092148a-fd66-4ef5-893f-8cc108bb2cb3" xlink:to="loc_wkhs_CreditAgreementDomain_e092148a-fd66-4ef5-893f-8cc108bb2cb3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementDomain_6b8683b6-f9e8-476f-9558-2a4d2b96d453" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_wkhs_CreditAgreementAxis_e092148a-fd66-4ef5-893f-8cc108bb2cb3" xlink:to="loc_wkhs_CreditAgreementDomain_6b8683b6-f9e8-476f-9558-2a4d2b96d453" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_MarathonMember_352880d2-0ffc-4cb5-b7e0-3f25064aec87" xlink:href="wkhs-20191231.xsd#wkhs_MarathonMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_CreditAgreementDomain_6b8683b6-f9e8-476f-9558-2a4d2b96d453" xlink:to="loc_wkhs_MarathonMember_352880d2-0ffc-4cb5-b7e0-3f25064aec87" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ArosaMember_ade25670-9a14-49a1-95ba-4ddaad49e790" xlink:href="wkhs-20191231.xsd#wkhs_ArosaMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_CreditAgreementDomain_6b8683b6-f9e8-476f-9558-2a4d2b96d453" xlink:to="loc_wkhs_ArosaMember_ade25670-9a14-49a1-95ba-4ddaad49e790" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/ConsolidatedStatementsofCashFlowsParenthetical" xlink:type="simple" xlink:href="wkhs-20191231.xsd#ConsolidatedStatementsofCashFlowsParenthetical"/>
<link:definitionLink xlink:role="http://workhorse.com/role/ConsolidatedStatementsofCashFlowsParenthetical" xlink:type="extended" id="i8962d2d0940a446b843f05a7ec966985_2fbe0a59-abd8-44c1-96df-8c5442366120">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_c0bdc68e-e775-4a51-b1fe-607fa59ee8bb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_6cc65c54-5056-43f9-bca4-6cbc68754ec6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c0bdc68e-e775-4a51-b1fe-607fa59ee8bb" xlink:to="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_6cc65c54-5056-43f9-bca4-6cbc68754ec6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WarrantsToPurchaseCommonStock_1ed2c012-c0d6-4f03-a037-dfe50e1e827c" xlink:href="wkhs-20191231.xsd#wkhs_WarrantsToPurchaseCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_6cc65c54-5056-43f9-bca4-6cbc68754ec6" xlink:to="loc_wkhs_WarrantsToPurchaseCommonStock_1ed2c012-c0d6-4f03-a037-dfe50e1e827c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StockIssuedDuringPeriodValueConversionOfAccountPayable_84100d54-cd6f-4a1d-9b1a-897b0f539970" xlink:href="wkhs-20191231.xsd#wkhs_StockIssuedDuringPeriodValueConversionOfAccountPayable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_6cc65c54-5056-43f9-bca4-6cbc68754ec6" xlink:to="loc_wkhs_StockIssuedDuringPeriodValueConversionOfAccountPayable_84100d54-cd6f-4a1d-9b1a-897b0f539970" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_b3f9aeae-897b-4b2e-b138-33bcb03d8c28" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_c0bdc68e-e775-4a51-b1fe-607fa59ee8bb" xlink:to="loc_us-gaap_StatementTable_b3f9aeae-897b-4b2e-b138-33bcb03d8c28" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementAxis_237deae3-e9fc-494d-b42c-be25722687d2" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_b3f9aeae-897b-4b2e-b138-33bcb03d8c28" xlink:to="loc_wkhs_CreditAgreementAxis_237deae3-e9fc-494d-b42c-be25722687d2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementDomain_237deae3-e9fc-494d-b42c-be25722687d2_default" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_wkhs_CreditAgreementAxis_237deae3-e9fc-494d-b42c-be25722687d2" xlink:to="loc_wkhs_CreditAgreementDomain_237deae3-e9fc-494d-b42c-be25722687d2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementDomain_2b6e6b58-f7e8-4d0d-851f-67bdb2521548" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_wkhs_CreditAgreementAxis_237deae3-e9fc-494d-b42c-be25722687d2" xlink:to="loc_wkhs_CreditAgreementDomain_2b6e6b58-f7e8-4d0d-851f-67bdb2521548" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_294ac57e-b5ac-45cc-b692-da23709a5f7b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeriesBPreferredStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_CreditAgreementDomain_2b6e6b58-f7e8-4d0d-851f-67bdb2521548" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_294ac57e-b5ac-45cc-b692-da23709a5f7b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_MarathonMember_33c8e2e7-0d32-49d7-b909-47cbc77d4f4f" xlink:href="wkhs-20191231.xsd#wkhs_MarathonMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_CreditAgreementDomain_2b6e6b58-f7e8-4d0d-851f-67bdb2521548" xlink:to="loc_wkhs_MarathonMember_33c8e2e7-0d32-49d7-b909-47cbc77d4f4f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ArosaMember_bb282591-0d62-44e6-88f6-917375498397" xlink:href="wkhs-20191231.xsd#wkhs_ArosaMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_CreditAgreementDomain_2b6e6b58-f7e8-4d0d-851f-67bdb2521548" xlink:to="loc_wkhs_ArosaMember_bb282591-0d62-44e6-88f6-917375498397" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciples" xlink:type="simple" xlink:href="wkhs-20191231.xsd#SummaryofBusinessandSignificantAccountingPrinciples"/>
<link:definitionLink xlink:role="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciples" xlink:type="extended" id="i7d1a729290174ed2a98516560d51393a_8d75c84e-1907-4521-be37-234d72eb399a"/>
<link:roleRef roleURI="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesPolicies" xlink:type="simple" xlink:href="wkhs-20191231.xsd#SummaryofBusinessandSignificantAccountingPrinciplesPolicies"/>
<link:definitionLink xlink:role="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesPolicies" xlink:type="extended" id="i9eb357a164c24a958a1f3adf6cf203b1_88152ade-2686-4270-923a-c5eee1f4db56"/>
<link:roleRef roleURI="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#SummaryofBusinessandSignificantAccountingPrinciplesTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesTables" xlink:type="extended" id="i65d42d10151b49b4b6e954acfe3e29d0_c26102d6-7e3b-4402-9ab5-06e91ebb7401"/>
<link:roleRef roleURI="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#SummaryofBusinessandSignificantAccountingPrinciplesDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesDetails" xlink:type="extended" id="i83563aea97424425b9e4a88eb9e27b12_60a6ec90-12bd-44ad-a8cf-37d5935bff73">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_809f180d-4baf-460e-84a2-8a24376d93e6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_632e9fdd-d64d-454f-b864-00e01307a1f7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_809f180d-4baf-460e-84a2-8a24376d93e6" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_632e9fdd-d64d-454f-b864-00e01307a1f7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_8ef16dee-c4d0-4029-8d73-8bae9000e9b4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesAuthorized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_809f180d-4baf-460e-84a2-8a24376d93e6" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_8ef16dee-c4d0-4029-8d73-8bae9000e9b4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_f0b65b13-9bae-4854-940b-4c6e21d84e6b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_809f180d-4baf-460e-84a2-8a24376d93e6" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_f0b65b13-9bae-4854-940b-4c6e21d84e6b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DebtInstrumentConvertibleNumberOfSharesConvertible_b6dfbfd9-4d40-4805-9748-fdb78dad9c5d" xlink:href="wkhs-20191231.xsd#wkhs_DebtInstrumentConvertibleNumberOfSharesConvertible"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_809f180d-4baf-460e-84a2-8a24376d93e6" xlink:to="loc_wkhs_DebtInstrumentConvertibleNumberOfSharesConvertible_b6dfbfd9-4d40-4805-9748-fdb78dad9c5d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_FairValueAssumptionExpectedVolatilityRate_8ca7c6a0-5919-4ac8-abce-a10ecff519fc" xlink:href="wkhs-20191231.xsd#wkhs_FairValueAssumptionExpectedVolatilityRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_809f180d-4baf-460e-84a2-8a24376d93e6" xlink:to="loc_wkhs_FairValueAssumptionExpectedVolatilityRate_8ca7c6a0-5919-4ac8-abce-a10ecff519fc" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a52e8038-fe3b-4f5b-b508-f303b9ddadf5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_809f180d-4baf-460e-84a2-8a24376d93e6" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a52e8038-fe3b-4f5b-b508-f303b9ddadf5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_92ae0188-793e-4b10-aeb4-657cac65fc54" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a52e8038-fe3b-4f5b-b508-f303b9ddadf5" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_92ae0188-793e-4b10-aeb4-657cac65fc54" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_92ae0188-793e-4b10-aeb4-657cac65fc54_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_92ae0188-793e-4b10-aeb4-657cac65fc54" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_92ae0188-793e-4b10-aeb4-657cac65fc54_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4f8be2e3-a6e2-4f48-8e87-b890d222c109" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_92ae0188-793e-4b10-aeb4-657cac65fc54" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4f8be2e3-a6e2-4f48-8e87-b890d222c109" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleNotesPayableMember_f0747abc-f105-4f6c-b51b-119f302fc5af" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleNotesPayableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4f8be2e3-a6e2-4f48-8e87-b890d222c109" xlink:to="loc_us-gaap_ConvertibleNotesPayableMember_f0747abc-f105-4f6c-b51b-119f302fc5af" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_ec31c608-3f1b-4630-824f-255547343c02" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a52e8038-fe3b-4f5b-b508-f303b9ddadf5" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_ec31c608-3f1b-4630-824f-255547343c02" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_ec31c608-3f1b-4630-824f-255547343c02_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_ec31c608-3f1b-4630-824f-255547343c02" xlink:to="loc_us-gaap_EquityComponentDomain_ec31c608-3f1b-4630-824f-255547343c02_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_ecbe32b9-19db-4b44-b2bb-3ea8484bde4b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_ec31c608-3f1b-4630-824f-255547343c02" xlink:to="loc_us-gaap_EquityComponentDomain_ecbe32b9-19db-4b44-b2bb-3ea8484bde4b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_169700da-b603-446a-be8e-fbb11f6b390b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_ecbe32b9-19db-4b44-b2bb-3ea8484bde4b" xlink:to="loc_us-gaap_CommonStockMember_169700da-b603-446a-be8e-fbb11f6b390b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_757f1b19-1da7-4c0f-8b86-a75ea24034bf" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a52e8038-fe3b-4f5b-b508-f303b9ddadf5" xlink:to="loc_srt_RangeAxis_757f1b19-1da7-4c0f-8b86-a75ea24034bf" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_757f1b19-1da7-4c0f-8b86-a75ea24034bf_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_757f1b19-1da7-4c0f-8b86-a75ea24034bf" xlink:to="loc_srt_RangeMember_757f1b19-1da7-4c0f-8b86-a75ea24034bf_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_ff2444bb-c153-4a2f-a5a2-6d673a30e805" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_757f1b19-1da7-4c0f-8b86-a75ea24034bf" xlink:to="loc_srt_RangeMember_ff2444bb-c153-4a2f-a5a2-6d673a30e805" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_3c470963-d524-4ac8-8840-27d01f649106" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_ff2444bb-c153-4a2f-a5a2-6d673a30e805" xlink:to="loc_srt_MinimumMember_3c470963-d524-4ac8-8840-27d01f649106" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_0e21b7dd-4ab2-48f7-b344-79c48b6acb76" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_ff2444bb-c153-4a2f-a5a2-6d673a30e805" xlink:to="loc_srt_MaximumMember_0e21b7dd-4ab2-48f7-b344-79c48b6acb76" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesEstimatedUsefulLivesDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#SummaryofBusinessandSignificantAccountingPrinciplesEstimatedUsefulLivesDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesEstimatedUsefulLivesDetails" xlink:type="extended" id="iae6c90786a214d9b9b116a89dec5a836_5846b411-6aed-4b40-ac55-190ae4af4059">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_14dd8da7-a107-4e49-a395-bc3eee6cdaa0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_49e7be0b-72a5-4b6e-97bc-d415c80bbdb7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_14dd8da7-a107-4e49-a395-bc3eee6cdaa0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_49e7be0b-72a5-4b6e-97bc-d415c80bbdb7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_28a35343-8c19-4c8f-ad05-91a70aced8ce" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_14dd8da7-a107-4e49-a395-bc3eee6cdaa0" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_28a35343-8c19-4c8f-ad05-91a70aced8ce" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_8cbee6b9-94b3-4a7e-95b5-5bd8dbb325dd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_28a35343-8c19-4c8f-ad05-91a70aced8ce" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_8cbee6b9-94b3-4a7e-95b5-5bd8dbb325dd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8cbee6b9-94b3-4a7e-95b5-5bd8dbb325dd_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_8cbee6b9-94b3-4a7e-95b5-5bd8dbb325dd" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8cbee6b9-94b3-4a7e-95b5-5bd8dbb325dd_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d1767844-8930-4fcd-af62-5e7498c903ce" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_8cbee6b9-94b3-4a7e-95b5-5bd8dbb325dd" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d1767844-8930-4fcd-af62-5e7498c903ce" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingMember_7e622dcf-81c6-4ce3-b500-0fc183c71fae" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BuildingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d1767844-8930-4fcd-af62-5e7498c903ce" xlink:to="loc_us-gaap_BuildingMember_7e622dcf-81c6-4ce3-b500-0fc183c71fae" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_d176e91d-dc0e-42f2-9687-11a2125def6d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d1767844-8930-4fcd-af62-5e7498c903ce" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_d176e91d-dc0e-42f2-9687-11a2125def6d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentMember_97b7ee9d-f592-4898-bfb0-28d0144dbddb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquipmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d1767844-8930-4fcd-af62-5e7498c903ce" xlink:to="loc_us-gaap_EquipmentMember_97b7ee9d-f592-4898-bfb0-28d0144dbddb" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VehiclesMember_e2aa971c-ea9d-476e-bddd-0adccedaa872" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VehiclesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_d1767844-8930-4fcd-af62-5e7498c903ce" xlink:to="loc_us-gaap_VehiclesMember_e2aa971c-ea9d-476e-bddd-0adccedaa872" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_1fb6ae80-f0b8-4d8b-b79f-62b6afd8b310" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_28a35343-8c19-4c8f-ad05-91a70aced8ce" xlink:to="loc_srt_RangeAxis_1fb6ae80-f0b8-4d8b-b79f-62b6afd8b310" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1fb6ae80-f0b8-4d8b-b79f-62b6afd8b310_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_1fb6ae80-f0b8-4d8b-b79f-62b6afd8b310" xlink:to="loc_srt_RangeMember_1fb6ae80-f0b8-4d8b-b79f-62b6afd8b310_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_6df3e892-8f12-4567-af77-11a5785388ad" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_1fb6ae80-f0b8-4d8b-b79f-62b6afd8b310" xlink:to="loc_srt_RangeMember_6df3e892-8f12-4567-af77-11a5785388ad" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_492a637e-90f5-4559-9bc1-0c21ca70767a" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6df3e892-8f12-4567-af77-11a5785388ad" xlink:to="loc_srt_MaximumMember_492a637e-90f5-4559-9bc1-0c21ca70767a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_b08b15ed-cf1a-422f-838e-4efe5e929cb7" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6df3e892-8f12-4567-af77-11a5785388ad" xlink:to="loc_srt_MinimumMember_b08b15ed-cf1a-422f-838e-4efe5e929cb7" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesWarrantyAccrualDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#SummaryofBusinessandSignificantAccountingPrinciplesWarrantyAccrualDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesWarrantyAccrualDetails" xlink:type="extended" id="i14c9b6cb756745238a9c094f7a9da3ed_2e39818e-2c29-410b-b65c-eefae05858be"/>
<link:roleRef roleURI="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesEarningsPerShareDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#SummaryofBusinessandSignificantAccountingPrinciplesEarningsPerShareDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/SummaryofBusinessandSignificantAccountingPrinciplesEarningsPerShareDetails" xlink:type="extended" id="i6941a553e6ac4489810f93f025ab0e6b_d4614cf2-b769-4b15-bc40-706bf03ff658">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d93ed71a-39b8-41f1-9aea-0b970f0f22d7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_a4c512eb-68ef-40a4-b706-a660dc856be4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d93ed71a-39b8-41f1-9aea-0b970f0f22d7" xlink:to="loc_us-gaap_NetIncomeLoss_a4c512eb-68ef-40a4-b706-a660dc856be4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Dividends_a6e77ba0-5dca-4f83-849d-7b09035e375d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Dividends"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d93ed71a-39b8-41f1-9aea-0b970f0f22d7" xlink:to="loc_us-gaap_Dividends_a6e77ba0-5dca-4f83-849d-7b09035e375d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_625bb86b-9005-411e-b819-94ac6159fc45" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d93ed71a-39b8-41f1-9aea-0b970f0f22d7" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_625bb86b-9005-411e-b819-94ac6159fc45" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_77ed8950-fa1e-46b8-9abb-c47ff42219a6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d93ed71a-39b8-41f1-9aea-0b970f0f22d7" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_77ed8950-fa1e-46b8-9abb-c47ff42219a6" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_f7bbcc18-69e6-421b-a58e-fa23bc4988df" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d93ed71a-39b8-41f1-9aea-0b970f0f22d7" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_f7bbcc18-69e6-421b-a58e-fa23bc4988df" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_7b16b408-6965-4855-b182-d4842624b655" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d93ed71a-39b8-41f1-9aea-0b970f0f22d7" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_7b16b408-6965-4855-b182-d4842624b655" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_40165e82-95f4-4152-a1e2-553c00ef3f44" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d93ed71a-39b8-41f1-9aea-0b970f0f22d7" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_40165e82-95f4-4152-a1e2-553c00ef3f44" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_15b4c507-75b0-4148-9a34-624a465fa9f3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_d93ed71a-39b8-41f1-9aea-0b970f0f22d7" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_15b4c507-75b0-4148-9a34-624a465fa9f3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_ec98346e-b9a9-4e5e-bd5b-46f4782028c3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_15b4c507-75b0-4148-9a34-624a465fa9f3" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_ec98346e-b9a9-4e5e-bd5b-46f4782028c3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ec98346e-b9a9-4e5e-bd5b-46f4782028c3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_ec98346e-b9a9-4e5e-bd5b-46f4782028c3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ec98346e-b9a9-4e5e-bd5b-46f4782028c3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_f89f50da-3a34-4ed1-91df-01e5bbb0944e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_ec98346e-b9a9-4e5e-bd5b-46f4782028c3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_f89f50da-3a34-4ed1-91df-01e5bbb0944e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleNotesPayableMember_91f7967b-d06e-45ed-9655-853e3c714bd6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleNotesPayableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_f89f50da-3a34-4ed1-91df-01e5bbb0944e" xlink:to="loc_us-gaap_ConvertibleNotesPayableMember_91f7967b-d06e-45ed-9655-853e3c714bd6" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/Inventory" xlink:type="simple" xlink:href="wkhs-20191231.xsd#Inventory"/>
<link:definitionLink xlink:role="http://workhorse.com/role/Inventory" xlink:type="extended" id="i9060c44d6588482296397a699c220ea9_790ae115-5f45-472e-a8a4-1d32a831f4b4"/>
<link:roleRef roleURI="http://workhorse.com/role/InventoryTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#InventoryTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/InventoryTables" xlink:type="extended" id="i47034fd35c83419a90b9f2768589c354_61ab0313-96c1-4290-af4e-3fc55a92f0e0"/>
<link:roleRef roleURI="http://workhorse.com/role/InventoryDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#InventoryDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/InventoryDetails" xlink:type="extended" id="id8ad1581a53544aa8a5e181a98674ff5_4346b24d-dd28-4f80-9663-3e8aac572720"/>
<link:roleRef roleURI="http://workhorse.com/role/Revenue" xlink:type="simple" xlink:href="wkhs-20191231.xsd#Revenue"/>
<link:definitionLink xlink:role="http://workhorse.com/role/Revenue" xlink:type="extended" id="ibe38e4e6f6524a398270a564e2ec8b4c_9b925f11-30a1-40d7-b07e-2ca08e02aeea"/>
<link:roleRef roleURI="http://workhorse.com/role/RevenueTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#RevenueTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/RevenueTables" xlink:type="extended" id="i4aca6d91468343ce951069b5f5787d97_1bdbe5f1-c4bd-466d-8a61-be7144b6f9b3"/>
<link:roleRef roleURI="http://workhorse.com/role/RevenueDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#RevenueDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/RevenueDetails" xlink:type="extended" id="ifba8c997e9744ab3b9e36001634a9f7f_ff11539c-05cb-48ed-b18f-1fa0b891e2b7">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_c0932119-8101-4553-aa78-0ac21d6db1f1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_f28d3748-f019-4973-bc98-f1ed0f77becf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_c0932119-8101-4553-aa78-0ac21d6db1f1" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_f28d3748-f019-4973-bc98-f1ed0f77becf" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_009367ac-a647-486e-8cb2-950c8c0f06a1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_c0932119-8101-4553-aa78-0ac21d6db1f1" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_009367ac-a647-486e-8cb2-950c8c0f06a1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_7e87911b-264e-4930-87cc-58f6ca0327c9" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_009367ac-a647-486e-8cb2-950c8c0f06a1" xlink:to="loc_srt_ProductOrServiceAxis_7e87911b-264e-4930-87cc-58f6ca0327c9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_7e87911b-264e-4930-87cc-58f6ca0327c9_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_7e87911b-264e-4930-87cc-58f6ca0327c9" xlink:to="loc_srt_ProductsAndServicesDomain_7e87911b-264e-4930-87cc-58f6ca0327c9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_c939b3be-1638-4fdb-b592-fc48149bb86a" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_7e87911b-264e-4930-87cc-58f6ca0327c9" xlink:to="loc_srt_ProductsAndServicesDomain_c939b3be-1638-4fdb-b592-fc48149bb86a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AutomotiveMember_db1ec102-75c7-45ec-b4e8-357c40030cb6" xlink:href="wkhs-20191231.xsd#wkhs_AutomotiveMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_c939b3be-1638-4fdb-b592-fc48149bb86a" xlink:to="loc_wkhs_AutomotiveMember_db1ec102-75c7-45ec-b4e8-357c40030cb6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_OtherMember_efac6579-f0ce-4e0f-a3e3-d0a0130afd53" xlink:href="wkhs-20191231.xsd#wkhs_OtherMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_c939b3be-1638-4fdb-b592-fc48149bb86a" xlink:to="loc_wkhs_OtherMember_efac6579-f0ce-4e0f-a3e3-d0a0130afd53" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/PropertyPlantandEquipmentNet" xlink:type="simple" xlink:href="wkhs-20191231.xsd#PropertyPlantandEquipmentNet"/>
<link:definitionLink xlink:role="http://workhorse.com/role/PropertyPlantandEquipmentNet" xlink:type="extended" id="i09f07e85a5df4d2c99cb71e8f79c0474_abe491c5-c8a0-4521-bd6e-5d3fbb8cf895"/>
<link:roleRef roleURI="http://workhorse.com/role/PropertyPlantandEquipmentNetTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#PropertyPlantandEquipmentNetTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/PropertyPlantandEquipmentNetTables" xlink:type="extended" id="i03e2a3471dfa4493911f913a883e0193_ff6114c0-5abd-4be5-8695-507ab420b737"/>
<link:roleRef roleURI="http://workhorse.com/role/PropertyPlantandEquipmentNetDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#PropertyPlantandEquipmentNetDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/PropertyPlantandEquipmentNetDetails" xlink:type="extended" id="icb2c7fbf41d1426d96828ac39956407e_02e54225-db48-4744-ae30-4617ae854846">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_b1e8e67c-96f9-401a-91d9-611879b1608e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_160a81a0-9ea0-415c-bf72-59b62720592d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_b1e8e67c-96f9-401a-91d9-611879b1608e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_160a81a0-9ea0-415c-bf72-59b62720592d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_20b79e68-7303-4b07-ba6c-7666d9dc0d43" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_b1e8e67c-96f9-401a-91d9-611879b1608e" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_20b79e68-7303-4b07-ba6c-7666d9dc0d43" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_ad3a8a07-620f-4767-bfbf-315e07d55530" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_b1e8e67c-96f9-401a-91d9-611879b1608e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_ad3a8a07-620f-4767-bfbf-315e07d55530" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_4e1bef09-3266-4556-b544-5c997466fe1f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_b1e8e67c-96f9-401a-91d9-611879b1608e" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_4e1bef09-3266-4556-b544-5c997466fe1f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f0c48955-29ae-4937-97fd-e3ba6ff388a7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_4e1bef09-3266-4556-b544-5c997466fe1f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f0c48955-29ae-4937-97fd-e3ba6ff388a7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f0c48955-29ae-4937-97fd-e3ba6ff388a7_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f0c48955-29ae-4937-97fd-e3ba6ff388a7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f0c48955-29ae-4937-97fd-e3ba6ff388a7_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20823dff-421b-494e-9d7b-1301b7114941" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f0c48955-29ae-4937-97fd-e3ba6ff388a7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20823dff-421b-494e-9d7b-1301b7114941" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_00333664-0e36-4136-bff5-550724c824ce" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20823dff-421b-494e-9d7b-1301b7114941" xlink:to="loc_us-gaap_LandMember_00333664-0e36-4136-bff5-550724c824ce" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingMember_5cb9f641-c4a4-40a7-9369-b60369ef84d5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BuildingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20823dff-421b-494e-9d7b-1301b7114941" xlink:to="loc_us-gaap_BuildingMember_5cb9f641-c4a4-40a7-9369-b60369ef84d5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_bdf2a9c6-4b34-4857-b710-d46aa8459b94" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseholdImprovementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20823dff-421b-494e-9d7b-1301b7114941" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_bdf2a9c6-4b34-4857-b710-d46aa8459b94" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerEquipmentMember_e37b4f9d-614e-4707-8e40-cbaa6702870a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComputerEquipmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20823dff-421b-494e-9d7b-1301b7114941" xlink:to="loc_us-gaap_ComputerEquipmentMember_e37b4f9d-614e-4707-8e40-cbaa6702870a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquipmentMember_5a5ce398-74ab-4db8-b0d8-25e509a7e3b0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquipmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20823dff-421b-494e-9d7b-1301b7114941" xlink:to="loc_us-gaap_EquipmentMember_5a5ce398-74ab-4db8-b0d8-25e509a7e3b0" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressMember_26cbf18c-fb5d-4911-b7e4-ea2ba392d384" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConstructionInProgressMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20823dff-421b-494e-9d7b-1301b7114941" xlink:to="loc_us-gaap_ConstructionInProgressMember_26cbf18c-fb5d-4911-b7e4-ea2ba392d384" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VehiclesMember_0b4a50e6-2bdd-45d7-9639-0239128ab3b4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VehiclesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20823dff-421b-494e-9d7b-1301b7114941" xlink:to="loc_us-gaap_VehiclesMember_0b4a50e6-2bdd-45d7-9639-0239128ab3b4" xlink:type="arc" order="6"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/LongTermDebt" xlink:type="simple" xlink:href="wkhs-20191231.xsd#LongTermDebt"/>
<link:definitionLink xlink:role="http://workhorse.com/role/LongTermDebt" xlink:type="extended" id="i4c82f878845648d8b8cb3901b9517a32_1ef83529-bb47-4db8-b882-53c12944ba51"/>
<link:roleRef roleURI="http://workhorse.com/role/LongTermDebtTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#LongTermDebtTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/LongTermDebtTables" xlink:type="extended" id="ia3424ab047fb47df9785f76ccd2468bb_a0c58a1d-5192-47bd-aa80-e5ed75962edd"/>
<link:roleRef roleURI="http://workhorse.com/role/LongTermDebtTypeDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#LongTermDebtTypeDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/LongTermDebtTypeDetails" xlink:type="extended" id="ie7ae4fc691a1411fb6d81a06a7cb07ac_63b713a1-d57c-49b4-a882-93cd9ca8dc93">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_407ede5f-8534-4551-b327-1122a9fb3229" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_433af40a-db46-4323-86a8-6d2c8acd05e1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_407ede5f-8534-4551-b327-1122a9fb3229" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_433af40a-db46-4323-86a8-6d2c8acd05e1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_1a9cfc56-0fa5-465a-87b1-e8151683b092" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_407ede5f-8534-4551-b327-1122a9fb3229" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_1a9cfc56-0fa5-465a-87b1-e8151683b092" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_e0c900c5-e052-45b6-9254-5e2943ce2ecb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_407ede5f-8534-4551-b327-1122a9fb3229" xlink:to="loc_us-gaap_LongTermDebt_e0c900c5-e052-45b6-9254-5e2943ce2ecb" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermDebtCurrent_11f9415b-27e8-4902-80ef-83a46b5e88c7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLongTermDebtCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_407ede5f-8534-4551-b327-1122a9fb3229" xlink:to="loc_us-gaap_OtherLongTermDebtCurrent_11f9415b-27e8-4902-80ef-83a46b5e88c7" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_a0125a03-baa0-40d5-ba47-a63e666bad0f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_407ede5f-8534-4551-b327-1122a9fb3229" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_a0125a03-baa0-40d5-ba47-a63e666bad0f" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_23465a75-3bdf-4488-acaa-b1377289b750" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_407ede5f-8534-4551-b327-1122a9fb3229" xlink:to="loc_us-gaap_DebtInstrumentTable_23465a75-3bdf-4488-acaa-b1377289b750" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_caf4e257-e00e-4260-888f-3ac3fd809f57" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_23465a75-3bdf-4488-acaa-b1377289b750" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_caf4e257-e00e-4260-888f-3ac3fd809f57" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_caf4e257-e00e-4260-888f-3ac3fd809f57_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_caf4e257-e00e-4260-888f-3ac3fd809f57" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_caf4e257-e00e-4260-888f-3ac3fd809f57_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_d027d07b-2ca2-4b8d-afd2-c027e05d7cd3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_caf4e257-e00e-4260-888f-3ac3fd809f57" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_d027d07b-2ca2-4b8d-afd2-c027e05d7cd3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleNotesPayableMember_dd2c41ac-fe6f-4460-a2ed-d6b480d294a2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleNotesPayableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_d027d07b-2ca2-4b8d-afd2-c027e05d7cd3" xlink:to="loc_us-gaap_ConvertibleNotesPayableMember_dd2c41ac-fe6f-4460-a2ed-d6b480d294a2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansPayableMember_4ec2a513-6499-44cb-bab3-0b7a3e703658" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansPayableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_d027d07b-2ca2-4b8d-afd2-c027e05d7cd3" xlink:to="loc_us-gaap_LoansPayableMember_4ec2a513-6499-44cb-bab3-0b7a3e703658" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/LongTermDebtMaturitiesDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#LongTermDebtMaturitiesDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/LongTermDebtMaturitiesDetails" xlink:type="extended" id="ic733fd7b5c98499d8b6fb15b8a864d09_693eb59f-b581-4337-9346-7775ca354fc5"/>
<link:roleRef roleURI="http://workhorse.com/role/LongTermDebtDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#LongTermDebtDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/LongTermDebtDetails" xlink:type="extended" id="i03612780ef8a4153a00606b8b99a1706_34e9db08-acdc-46b4-9ef9-4098c97f57cf">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_f461f7a4-88df-4201-97e3-2d513b745b74" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_f461f7a4-88df-4201-97e3-2d513b745b74" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebt_6a5a0194-66e1-451d-8275-c4c47a99b5bb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_ConvertibleDebt_6a5a0194-66e1-451d-8275-c4c47a99b5bb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_e87cc167-dd87-4d65-9a34-b452b9018005" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfFinancingCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_e87cc167-dd87-4d65-9a34-b452b9018005" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_f4b16a61-e471-44ec-95a9-2cbc188c19fa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_f4b16a61-e471-44ec-95a9-2cbc188c19fa" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_e12bbc26-0850-41af-ab38-27dac337fba8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_e12bbc26-0850-41af-ab38-27dac337fba8" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtFairValueDisclosures_ed4b2c71-998a-44a7-ae70-e3d8bacdac38" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleDebtFairValueDisclosures"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_ConvertibleDebtFairValueDisclosures_ed4b2c71-998a-44a7-ae70-e3d8bacdac38" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DebtInstrumentIssuancePricePercentage_0cc8b116-b40b-4a12-8f4b-2ff5e9153b07" xlink:href="wkhs-20191231.xsd#wkhs_DebtInstrumentIssuancePricePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_DebtInstrumentIssuancePricePercentage_0cc8b116-b40b-4a12-8f4b-2ff5e9153b07" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_51159732-884f-4761-97c1-7f16614a3945" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_51159732-884f-4761-97c1-7f16614a3945" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DebtInstrumentConvertibleMinimumConvertibleAmount_ffddb71e-41f2-44b7-bf38-3fbe42297750" xlink:href="wkhs-20191231.xsd#wkhs_DebtInstrumentConvertibleMinimumConvertibleAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_DebtInstrumentConvertibleMinimumConvertibleAmount_ffddb71e-41f2-44b7-bf38-3fbe42297750" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtConversionConvertedInstrumentSharesIssued1_cf75c14c-820f-4e13-af9a-418b4a002dca" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtConversionConvertedInstrumentSharesIssued1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtConversionConvertedInstrumentSharesIssued1_cf75c14c-820f-4e13-af9a-418b4a002dca" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DebtInstrumentConvertibleDebtGainOnConversion_7977d645-4227-4738-adbb-10164a245382" xlink:href="wkhs-20191231.xsd#wkhs_DebtInstrumentConvertibleDebtGainOnConversion"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_DebtInstrumentConvertibleDebtGainOnConversion_7977d645-4227-4738-adbb-10164a245382" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_PrincipalAmountOutstandingConvertibleDebt_1cee8fc4-1644-4c39-999f-1443b8c3728f" xlink:href="wkhs-20191231.xsd#wkhs_PrincipalAmountOutstandingConvertibleDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_PrincipalAmountOutstandingConvertibleDebt_1cee8fc4-1644-4c39-999f-1443b8c3728f" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueOptionChangesInFairValueGainLoss1_27bfb8ec-4633-4194-89bc-58a79844a4a9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueOptionChangesInFairValueGainLoss1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_FairValueOptionChangesInFairValueGainLoss1_27bfb8ec-4633-4194-89bc-58a79844a4a9" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_05d6ebe7-42b4-45ae-8ced-b835980b3812" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_05d6ebe7-42b4-45ae-8ced-b835980b3812" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DebtInstrumentCovenantTermsLiquidityRequirementsCashAndCashEquivalents_7d615aec-5782-4b2e-a09b-e8836c57a5a8" xlink:href="wkhs-20191231.xsd#wkhs_DebtInstrumentCovenantTermsLiquidityRequirementsCashAndCashEquivalents"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_DebtInstrumentCovenantTermsLiquidityRequirementsCashAndCashEquivalents_7d615aec-5782-4b2e-a09b-e8836c57a5a8" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WarrantsToPurchaseOfCommonStockShares_5b7eb7c2-fb17-4437-b495-564e71f86f0f" xlink:href="wkhs-20191231.xsd#wkhs_WarrantsToPurchaseOfCommonStockShares"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_WarrantsToPurchaseOfCommonStockShares_5b7eb7c2-fb17-4437-b495-564e71f86f0f" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WeightedAveragePeriodCommonStockPrice_02f76e0d-45c8-4b71-b08d-1ef9bdd8b3b0" xlink:href="wkhs-20191231.xsd#wkhs_WeightedAveragePeriodCommonStockPrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_WeightedAveragePeriodCommonStockPrice_02f76e0d-45c8-4b71-b08d-1ef9bdd8b3b0" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_d5b170cf-75a8-4ad5-85e5-0c4d2842e390" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_d5b170cf-75a8-4ad5-85e5-0c4d2842e390" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent_2893f279-a71e-4537-b8ce-40b93cb127f4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent_2893f279-a71e-4537-b8ce-40b93cb127f4" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1b09cc55-d1d4-427b-b3e8-dfd8b82f75c2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1b09cc55-d1d4-427b-b3e8-dfd8b82f75c2" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtConversionOriginalDebtInterestRateOfDebt_a6b45a31-aede-4b3e-a8a0-687bedbe0ae6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtConversionOriginalDebtInterestRateOfDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtConversionOriginalDebtInterestRateOfDebt_a6b45a31-aede-4b3e-a8a0-687bedbe0ae6" xlink:type="arc" order="20"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_e13eb55c-485c-4066-bd65-ff7a78b97d0f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_e13eb55c-485c-4066-bd65-ff7a78b97d0f" xlink:type="arc" order="21"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ClassOfWarrantOrRightAdditionalWarrantIssuancePercentageOfAdditionalEquityIssuances_70555fed-3a47-4950-8af2-51c0f90b5894" xlink:href="wkhs-20191231.xsd#wkhs_ClassOfWarrantOrRightAdditionalWarrantIssuancePercentageOfAdditionalEquityIssuances"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_ClassOfWarrantOrRightAdditionalWarrantIssuancePercentageOfAdditionalEquityIssuances_70555fed-3a47-4950-8af2-51c0f90b5894" xlink:type="arc" order="22"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsPercentageOfIssuancePrice_8df27324-baf0-4462-9589-8060817646ac" xlink:href="wkhs-20191231.xsd#wkhs_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsPercentageOfIssuancePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsPercentageOfIssuancePrice_8df27324-baf0-4462-9589-8060817646ac" xlink:type="arc" order="23"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAdjustmentOfWarrants_324b60da-b98c-4528-ad21-618203985080" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAdjustmentOfWarrants"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_FairValueAdjustmentOfWarrants_324b60da-b98c-4528-ad21-618203985080" xlink:type="arc" order="24"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_777d9a1e-9b78-4e33-8698-f3d9e2531a1c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_777d9a1e-9b78-4e33-8698-f3d9e2531a1c" xlink:type="arc" order="25"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_c88f9bf6-1b6a-419e-b673-0a315ca18efc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_c88f9bf6-1b6a-419e-b673-0a315ca18efc" xlink:type="arc" order="26"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WarrantLiability_11888162-7baa-4d26-98d0-8ba8570e2306" xlink:href="wkhs-20191231.xsd#wkhs_WarrantLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_WarrantLiability_11888162-7baa-4d26-98d0-8ba8570e2306" xlink:type="arc" order="27"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_3687d451-fd7a-4777-ba3b-325f888ccc26" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_3687d451-fd7a-4777-ba3b-325f888ccc26" xlink:type="arc" order="28"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_PremiumPayableOnEarlyPayoffOfDebt_b19cdb2e-88d8-40b6-a251-3e634f9114e8" xlink:href="wkhs-20191231.xsd#wkhs_PremiumPayableOnEarlyPayoffOfDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_PremiumPayableOnEarlyPayoffOfDebt_b19cdb2e-88d8-40b6-a251-3e634f9114e8" xlink:type="arc" order="29"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_7f9752b4-24f8-4c55-ad92-d2c84ff4bd4f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentTerm_7f9752b4-24f8-4c55-ad92-d2c84ff4bd4f" xlink:type="arc" order="30"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AdjustmentToAdditionalPaidInCapitalWarrantReclassification_ee86bd69-4fc5-4837-adb9-5143fa2e4aab" xlink:href="wkhs-20191231.xsd#wkhs_AdjustmentToAdditionalPaidInCapitalWarrantReclassification"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_wkhs_AdjustmentToAdditionalPaidInCapitalWarrantReclassification_ee86bd69-4fc5-4837-adb9-5143fa2e4aab" xlink:type="arc" order="31"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightOutstanding_4daaae04-fef4-4d4f-91c8-c988e3249d6c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfWarrantOrRightOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_ClassOfWarrantOrRightOutstanding_4daaae04-fef4-4d4f-91c8-c988e3249d6c" xlink:type="arc" order="32"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_9fbea3f1-992c-4950-bd08-1f64f8f4aefb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_306f5461-36c2-46eb-8798-ed2310556d51" xlink:to="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_d435ded3-f4cc-4cc9-b43c-d7e9e1433e34" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:to="loc_us-gaap_FinancialInstrumentAxis_d435ded3-f4cc-4cc9-b43c-d7e9e1433e34" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d435ded3-f4cc-4cc9-b43c-d7e9e1433e34_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_d435ded3-f4cc-4cc9-b43c-d7e9e1433e34" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d435ded3-f4cc-4cc9-b43c-d7e9e1433e34_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7b9bea7d-3517-4c1c-a424-2b86a63077ac" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_d435ded3-f4cc-4cc9-b43c-d7e9e1433e34" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7b9bea7d-3517-4c1c-a424-2b86a63077ac" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementMember_abdbadc2-892e-47dc-848e-54bc0142faff" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7b9bea7d-3517-4c1c-a424-2b86a63077ac" xlink:to="loc_wkhs_CreditAgreementMember_abdbadc2-892e-47dc-848e-54bc0142faff" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_LoanAgreementMember_470aa1e5-0e2b-45e6-9044-33a79f54f4ce" xlink:href="wkhs-20191231.xsd#wkhs_LoanAgreementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_7b9bea7d-3517-4c1c-a424-2b86a63077ac" xlink:to="loc_wkhs_LoanAgreementMember_470aa1e5-0e2b-45e6-9044-33a79f54f4ce" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_96e08074-eecd-4fa6-9646-ff0c5c85b1f5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_96e08074-eecd-4fa6-9646-ff0c5c85b1f5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_96e08074-eecd-4fa6-9646-ff0c5c85b1f5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_96e08074-eecd-4fa6-9646-ff0c5c85b1f5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_96e08074-eecd-4fa6-9646-ff0c5c85b1f5_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2a08e6a0-5cf9-4fe6-9947-be9082df5777" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_96e08074-eecd-4fa6-9646-ff0c5c85b1f5" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2a08e6a0-5cf9-4fe6-9947-be9082df5777" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_004767da-10ee-4a45-bb9b-490e767a6a16" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2a08e6a0-5cf9-4fe6-9947-be9082df5777" xlink:to="loc_us-gaap_SeniorNotesMember_004767da-10ee-4a45-bb9b-490e767a6a16" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleNotesPayableMember_ad3d86ae-1ba4-435d-bbf6-6049d1a12eb4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleNotesPayableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2a08e6a0-5cf9-4fe6-9947-be9082df5777" xlink:to="loc_us-gaap_ConvertibleNotesPayableMember_ad3d86ae-1ba4-435d-bbf6-6049d1a12eb4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingAxis_5701c785-230b-48b5-8ca3-adb67029d426" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VestingAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:to="loc_us-gaap_VestingAxis_5701c785-230b-48b5-8ca3-adb67029d426" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_5701c785-230b-48b5-8ca3-adb67029d426_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VestingDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VestingAxis_5701c785-230b-48b5-8ca3-adb67029d426" xlink:to="loc_us-gaap_VestingDomain_5701c785-230b-48b5-8ca3-adb67029d426_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_c2f33288-da7c-4d1d-97f1-dc533a45cbc9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VestingDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VestingAxis_5701c785-230b-48b5-8ca3-adb67029d426" xlink:to="loc_us-gaap_VestingDomain_c2f33288-da7c-4d1d-97f1-dc533a45cbc9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_c837ce69-9de7-4981-9ab3-96e0f6f958b6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheOneMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_c2f33288-da7c-4d1d-97f1-dc533a45cbc9" xlink:to="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_c837ce69-9de7-4981-9ab3-96e0f6f958b6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_534ba281-1c89-451d-93eb-b6ffb99bc4da" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheTwoMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_c2f33288-da7c-4d1d-97f1-dc533a45cbc9" xlink:to="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_534ba281-1c89-451d-93eb-b6ffb99bc4da" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_f779504a-afb9-4c43-aa43-ebed0c787c38" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:to="loc_srt_RangeAxis_f779504a-afb9-4c43-aa43-ebed0c787c38" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f779504a-afb9-4c43-aa43-ebed0c787c38_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_f779504a-afb9-4c43-aa43-ebed0c787c38" xlink:to="loc_srt_RangeMember_f779504a-afb9-4c43-aa43-ebed0c787c38_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_6d42b07d-1111-4a57-9f0c-0f14b4ed1f5c" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_f779504a-afb9-4c43-aa43-ebed0c787c38" xlink:to="loc_srt_RangeMember_6d42b07d-1111-4a57-9f0c-0f14b4ed1f5c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_93fd020d-d196-464f-90a4-b9f4dd8bafae" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6d42b07d-1111-4a57-9f0c-0f14b4ed1f5c" xlink:to="loc_srt_MinimumMember_93fd020d-d196-464f-90a4-b9f4dd8bafae" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementAxis_b5913771-f722-4b77-94b3-216ef194e5bc" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:to="loc_wkhs_CreditAgreementAxis_b5913771-f722-4b77-94b3-216ef194e5bc" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementDomain_b5913771-f722-4b77-94b3-216ef194e5bc_default" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_wkhs_CreditAgreementAxis_b5913771-f722-4b77-94b3-216ef194e5bc" xlink:to="loc_wkhs_CreditAgreementDomain_b5913771-f722-4b77-94b3-216ef194e5bc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementDomain_23cfd88e-a5a7-4918-8fe5-d0280c5feee5" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_wkhs_CreditAgreementAxis_b5913771-f722-4b77-94b3-216ef194e5bc" xlink:to="loc_wkhs_CreditAgreementDomain_23cfd88e-a5a7-4918-8fe5-d0280c5feee5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ArosaMember_6898a497-f553-44b4-a59f-4179cf5be3f9" xlink:href="wkhs-20191231.xsd#wkhs_ArosaMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_CreditAgreementDomain_23cfd88e-a5a7-4918-8fe5-d0280c5feee5" xlink:to="loc_wkhs_ArosaMember_6898a497-f553-44b4-a59f-4179cf5be3f9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_cabe0df6-9162-40ed-bd9d-60529f21b03a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:to="loc_us-gaap_DebtInstrumentAxis_cabe0df6-9162-40ed-bd9d-60529f21b03a" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_cabe0df6-9162-40ed-bd9d-60529f21b03a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_cabe0df6-9162-40ed-bd9d-60529f21b03a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_cabe0df6-9162-40ed-bd9d-60529f21b03a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_4456b60c-38fc-44b3-8bdc-9aaca4442b25" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_cabe0df6-9162-40ed-bd9d-60529f21b03a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_4456b60c-38fc-44b3-8bdc-9aaca4442b25" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_MarathonTrancheOneLoanMember_14464a08-4f26-4e45-ac70-4ddf0aac6b79" xlink:href="wkhs-20191231.xsd#wkhs_MarathonTrancheOneLoanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4456b60c-38fc-44b3-8bdc-9aaca4442b25" xlink:to="loc_wkhs_MarathonTrancheOneLoanMember_14464a08-4f26-4e45-ac70-4ddf0aac6b79" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_RevolvingLoanMember_09a3e36c-0be8-450f-a9c1-587b1cb648d7" xlink:href="wkhs-20191231.xsd#wkhs_RevolvingLoanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4456b60c-38fc-44b3-8bdc-9aaca4442b25" xlink:to="loc_wkhs_RevolvingLoanMember_09a3e36c-0be8-450f-a9c1-587b1cb648d7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementMember_59f6dbbc-3814-4d9d-81b3-ad208891ffd4" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4456b60c-38fc-44b3-8bdc-9aaca4442b25" xlink:to="loc_wkhs_CreditAgreementMember_59f6dbbc-3814-4d9d-81b3-ad208891ffd4" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_0f2cf45b-03fc-4238-a366-a5e3b0790275" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_0f2cf45b-03fc-4238-a366-a5e3b0790275" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_0f2cf45b-03fc-4238-a366-a5e3b0790275_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_0f2cf45b-03fc-4238-a366-a5e3b0790275" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_0f2cf45b-03fc-4238-a366-a5e3b0790275_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_7f79b336-8ebd-4bd5-855d-65f88086e401" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_0f2cf45b-03fc-4238-a366-a5e3b0790275" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_7f79b336-8ebd-4bd5-855d-65f88086e401" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_c72b7546-08a7-426a-b2b4-ae124a8b8143" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_7f79b336-8ebd-4bd5-855d-65f88086e401" xlink:to="loc_us-gaap_SubsequentEventMember_c72b7546-08a7-426a-b2b4-ae124a8b8143" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_0dae535c-ec4c-470d-960d-bedf52559aa4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_cc576d65-98e3-46c3-a8bf-1509469d90c2" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_0dae535c-ec4c-470d-960d-bedf52559aa4" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_0dae535c-ec4c-470d-960d-bedf52559aa4_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_0dae535c-ec4c-470d-960d-bedf52559aa4" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_0dae535c-ec4c-470d-960d-bedf52559aa4_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_6ba829c4-7f3e-4d82-8833-55cb2ebf6374" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_0dae535c-ec4c-470d-960d-bedf52559aa4" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_6ba829c4-7f3e-4d82-8833-55cb2ebf6374" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseMember_61a4cfc7-0236-480f-a113-41fd042c1325" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpenseMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_6ba829c4-7f3e-4d82-8833-55cb2ebf6374" xlink:to="loc_us-gaap_InterestExpenseMember_61a4cfc7-0236-480f-a113-41fd042c1325" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/DukeFinancingObligation" xlink:type="simple" xlink:href="wkhs-20191231.xsd#DukeFinancingObligation"/>
<link:definitionLink xlink:role="http://workhorse.com/role/DukeFinancingObligation" xlink:type="extended" id="i876a19fe667f4f2ea199624e5e3a6873_5d62121c-97b5-4fd3-aaf1-e685e92fdef4"/>
<link:roleRef roleURI="http://workhorse.com/role/DukeFinancingObligationDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#DukeFinancingObligationDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/DukeFinancingObligationDetails" xlink:type="extended" id="i6b7bd9ca4bce4cef9362cfebca3f6fb0_20082b18-cbe0-43ed-bc32-ac35d106e628">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementLineItems_99ef208b-88a4-4c0c-aaf8-89251782ca48" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ObligationWithJointAndSeveralLiabilityArrangementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_NumberOfBatteryCellsSold_827b74f5-e322-40c2-aede-3631deeeb6f2" xlink:href="wkhs-20191231.xsd#wkhs_NumberOfBatteryCellsSold"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementLineItems_99ef208b-88a4-4c0c-aaf8-89251782ca48" xlink:to="loc_wkhs_NumberOfBatteryCellsSold_827b74f5-e322-40c2-aede-3631deeeb6f2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ProceedsFromSaleOfInventory_73617895-0f18-4acc-8ab7-36a66adf8b24" xlink:href="wkhs-20191231.xsd#wkhs_ProceedsFromSaleOfInventory"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementLineItems_99ef208b-88a4-4c0c-aaf8-89251782ca48" xlink:to="loc_wkhs_ProceedsFromSaleOfInventory_73617895-0f18-4acc-8ab7-36a66adf8b24" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DukeFinancingObligation_3e52c5af-b95d-4977-9d38-83968358c6a5" xlink:href="wkhs-20191231.xsd#wkhs_DukeFinancingObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementLineItems_99ef208b-88a4-4c0c-aaf8-89251782ca48" xlink:to="loc_wkhs_DukeFinancingObligation_3e52c5af-b95d-4977-9d38-83968358c6a5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_OptionExercisePrice_7e1557ec-be75-43f8-b35c-572eb71ce3d3" xlink:href="wkhs-20191231.xsd#wkhs_OptionExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementLineItems_99ef208b-88a4-4c0c-aaf8-89251782ca48" xlink:to="loc_wkhs_OptionExercisePrice_7e1557ec-be75-43f8-b35c-572eb71ce3d3" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_313bff9d-1bf2-4def-be58-eda22e1a548b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesIssued"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementLineItems_99ef208b-88a4-4c0c-aaf8-89251782ca48" xlink:to="loc_us-gaap_CommonStockSharesIssued_313bff9d-1bf2-4def-be58-eda22e1a548b" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_6f2fceb9-ff74-464e-8df5-c94dbbd24c5b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementLineItems_99ef208b-88a4-4c0c-aaf8-89251782ca48" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_6f2fceb9-ff74-464e-8df5-c94dbbd24c5b" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementTable_f9774ec1-ce4f-4c0f-a7b6-1529a2da69c7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ObligationWithJointAndSeveralLiabilityArrangementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementLineItems_99ef208b-88a4-4c0c-aaf8-89251782ca48" xlink:to="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementTable_f9774ec1-ce4f-4c0f-a7b6-1529a2da69c7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_722ca9f6-07fd-4e0a-b0e1-3acd840a7e50" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementTable_f9774ec1-ce4f-4c0f-a7b6-1529a2da69c7" xlink:to="loc_us-gaap_FinancialInstrumentAxis_722ca9f6-07fd-4e0a-b0e1-3acd840a7e50" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_722ca9f6-07fd-4e0a-b0e1-3acd840a7e50_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_722ca9f6-07fd-4e0a-b0e1-3acd840a7e50" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_722ca9f6-07fd-4e0a-b0e1-3acd840a7e50_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cdddfdd2-cfc3-4676-8a4c-e0d71fb8ea80" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_722ca9f6-07fd-4e0a-b0e1-3acd840a7e50" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cdddfdd2-cfc3-4676-8a4c-e0d71fb8ea80" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_SalesAgreementMember_79b480b6-a907-49b2-8cb9-d2808b878489" xlink:href="wkhs-20191231.xsd#wkhs_SalesAgreementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_cdddfdd2-cfc3-4676-8a4c-e0d71fb8ea80" xlink:to="loc_wkhs_SalesAgreementMember_79b480b6-a907-49b2-8cb9-d2808b878489" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementAxis_2e08766d-9c00-494b-99ae-3bc29391997c" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ObligationWithJointAndSeveralLiabilityArrangementTable_f9774ec1-ce4f-4c0f-a7b6-1529a2da69c7" xlink:to="loc_wkhs_CreditAgreementAxis_2e08766d-9c00-494b-99ae-3bc29391997c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementDomain_2e08766d-9c00-494b-99ae-3bc29391997c_default" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_wkhs_CreditAgreementAxis_2e08766d-9c00-494b-99ae-3bc29391997c" xlink:to="loc_wkhs_CreditAgreementDomain_2e08766d-9c00-494b-99ae-3bc29391997c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CreditAgreementDomain_7967b0c9-53a6-48a4-91ad-ca03c355e202" xlink:href="wkhs-20191231.xsd#wkhs_CreditAgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_wkhs_CreditAgreementAxis_2e08766d-9c00-494b-99ae-3bc29391997c" xlink:to="loc_wkhs_CreditAgreementDomain_7967b0c9-53a6-48a4-91ad-ca03c355e202" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ArosaMember_e1dd3d8f-305d-4f39-bf35-0e8996b77172" xlink:href="wkhs-20191231.xsd#wkhs_ArosaMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_CreditAgreementDomain_7967b0c9-53a6-48a4-91ad-ca03c355e202" xlink:to="loc_wkhs_ArosaMember_e1dd3d8f-305d-4f39-bf35-0e8996b77172" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/MandatoryRedeemableSeriesBPreferredStock" xlink:type="simple" xlink:href="wkhs-20191231.xsd#MandatoryRedeemableSeriesBPreferredStock"/>
<link:definitionLink xlink:role="http://workhorse.com/role/MandatoryRedeemableSeriesBPreferredStock" xlink:type="extended" id="i9ceddebf64514b32a2b78a5c2a717948_b0d010b2-37f7-4f1a-a78a-4f128f946d13"/>
<link:roleRef roleURI="http://workhorse.com/role/MandatoryRedeemableSeriesBPreferredStockDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#MandatoryRedeemableSeriesBPreferredStockDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/MandatoryRedeemableSeriesBPreferredStockDetails" xlink:type="extended" id="if4d0854f014548279f92da9182063e6c_636fd62a-ebae-4ebc-a2e9-34a09c5f893e">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsNumberOfShares_b0f301cf-806d-40d5-8bbb-22969dc03d0e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsNumberOfShares"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsNumberOfShares_b0f301cf-806d-40d5-8bbb-22969dc03d0e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare_5d4ecc6c-62d6-469c-a8f5-b67a9cad8fec" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_FinancialInstrumentSubjectToMandatoryRedemptionParValuePerShare_5d4ecc6c-62d6-469c-a8f5-b67a9cad8fec" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_5b857506-7ec6-488b-a7bc-1e4fa465361b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_5b857506-7ec6-488b-a7bc-1e4fa465361b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsMaximumAmount_9d220141-86e9-4187-86aa-ae3ed84af372" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsMaximumAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsMaximumAmount_9d220141-86e9-4187-86aa-ae3ed84af372" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockDividendRatePercentage_92a112d4-c7d3-4963-a2e1-0f663692a04e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_PreferredStockDividendRatePercentage_92a112d4-c7d3-4963-a2e1-0f663692a04e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharePrice_c572d5f2-dd59-4ba8-9d87-051c14d5f12e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_SharePrice_c572d5f2-dd59-4ba8-9d87-051c14d5f12e" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantsAndRightsOutstandingTerm_40cad267-b316-4b46-a9bd-3a8944e8b947" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WarrantsAndRightsOutstandingTerm"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_WarrantsAndRightsOutstandingTerm_40cad267-b316-4b46-a9bd-3a8944e8b947" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StockIssuedExerciseOfWarrantsPercentage_ff131eff-c0a7-435c-b8f2-7e50a7222f75" xlink:href="wkhs-20191231.xsd#wkhs_StockIssuedExerciseOfWarrantsPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_wkhs_StockIssuedExerciseOfWarrantsPercentage_ff131eff-c0a7-435c-b8f2-7e50a7222f75" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_c51707a8-857b-470d-90e4-95b6e04c9b48" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_c51707a8-857b-470d-90e4-95b6e04c9b48" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium_3ce28126-9ed0-43ce-ba2d-a34d90ac7d6f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_AmortizationOfDebtDiscountPremium_3ce28126-9ed0-43ce-ba2d-a34d90ac7d6f" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_2ad1035e-8c72-4253-b358-b3fc3019ca29" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfStockByClassTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_82c0a153-d62c-4f6a-9c78-5e6d72e51832" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_2ad1035e-8c72-4253-b358-b3fc3019ca29" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_6f62d747-eeb1-44e6-8495-59ae2c4c16eb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_2ad1035e-8c72-4253-b358-b3fc3019ca29" xlink:to="loc_us-gaap_StatementClassOfStockAxis_6f62d747-eeb1-44e6-8495-59ae2c4c16eb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_6f62d747-eeb1-44e6-8495-59ae2c4c16eb_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_6f62d747-eeb1-44e6-8495-59ae2c4c16eb" xlink:to="loc_us-gaap_ClassOfStockDomain_6f62d747-eeb1-44e6-8495-59ae2c4c16eb_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_15d6083c-806d-455b-a9ff-9ea48e85f7b9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_6f62d747-eeb1-44e6-8495-59ae2c4c16eb" xlink:to="loc_us-gaap_ClassOfStockDomain_15d6083c-806d-455b-a9ff-9ea48e85f7b9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_1ee67b12-1a23-4800-b965-04efff957e0c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonClassAMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_15d6083c-806d-455b-a9ff-9ea48e85f7b9" xlink:to="loc_us-gaap_CommonClassAMember_1ee67b12-1a23-4800-b965-04efff957e0c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_3cace1ec-c52e-40b2-8f97-d367b43e6464" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeriesBPreferredStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_15d6083c-806d-455b-a9ff-9ea48e85f7b9" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_3cace1ec-c52e-40b2-8f97-d367b43e6464" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis_da6c134d-4b8e-4040-b16c-aad06effad61" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_2ad1035e-8c72-4253-b358-b3fc3019ca29" xlink:to="loc_us-gaap_ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis_da6c134d-4b8e-4040-b16c-aad06effad61" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesSubjectToMandatoryRedemptionFinancialInstrumentDomain_da6c134d-4b8e-4040-b16c-aad06effad61_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesSubjectToMandatoryRedemptionFinancialInstrumentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis_da6c134d-4b8e-4040-b16c-aad06effad61" xlink:to="loc_us-gaap_SharesSubjectToMandatoryRedemptionFinancialInstrumentDomain_da6c134d-4b8e-4040-b16c-aad06effad61_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesSubjectToMandatoryRedemptionFinancialInstrumentDomain_0639c406-bb3f-4e2d-b767-2a9e66f4e87e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesSubjectToMandatoryRedemptionFinancialInstrumentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis_da6c134d-4b8e-4040-b16c-aad06effad61" xlink:to="loc_us-gaap_SharesSubjectToMandatoryRedemptionFinancialInstrumentDomain_0639c406-bb3f-4e2d-b767-2a9e66f4e87e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MandatorilyRedeemablePreferredStockMember_22bccd27-1ab0-4c0c-848a-fcd1bd7721df" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MandatorilyRedeemablePreferredStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharesSubjectToMandatoryRedemptionFinancialInstrumentDomain_0639c406-bb3f-4e2d-b767-2a9e66f4e87e" xlink:to="loc_us-gaap_MandatorilyRedeemablePreferredStockMember_22bccd27-1ab0-4c0c-848a-fcd1bd7721df" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_ffebb260-3563-4f0f-8b17-24da41fdfb37" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_2ad1035e-8c72-4253-b358-b3fc3019ca29" xlink:to="loc_srt_RangeAxis_ffebb260-3563-4f0f-8b17-24da41fdfb37" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_ffebb260-3563-4f0f-8b17-24da41fdfb37_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_ffebb260-3563-4f0f-8b17-24da41fdfb37" xlink:to="loc_srt_RangeMember_ffebb260-3563-4f0f-8b17-24da41fdfb37_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_45e9cd0f-f444-4cfe-ab5b-828ad5bc3f37" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_ffebb260-3563-4f0f-8b17-24da41fdfb37" xlink:to="loc_srt_RangeMember_45e9cd0f-f444-4cfe-ab5b-828ad5bc3f37" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_00af7319-40f8-432c-aeb7-92ae954c3b9b" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_45e9cd0f-f444-4cfe-ab5b-828ad5bc3f37" xlink:to="loc_srt_MaximumMember_00af7319-40f8-432c-aeb7-92ae954c3b9b" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/IncomeTaxes" xlink:type="simple" xlink:href="wkhs-20191231.xsd#IncomeTaxes"/>
<link:definitionLink xlink:role="http://workhorse.com/role/IncomeTaxes" xlink:type="extended" id="id2b36837aeee4012a114a2c7344a49e2_e0395e58-a026-4041-bf71-efa9a122aac6"/>
<link:roleRef roleURI="http://workhorse.com/role/IncomeTaxesTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#IncomeTaxesTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/IncomeTaxesTables" xlink:type="extended" id="i5846cd65f2d44607b3b77e977403ffbf_f52bde15-5248-4646-a264-bcf3d94b591c"/>
<link:roleRef roleURI="http://workhorse.com/role/IncomeTaxesDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#IncomeTaxesDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/IncomeTaxesDetails" xlink:type="extended" id="ib73ff81bd2334612a2ef9902520c71ed_7d04e537-815b-470d-a5fd-8fc2b0097946">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_b32a1d7e-c905-471f-ae80-6f4c0af12aab" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwardsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_fedd85b6-60d7-4afb-b37e-ca933e470557" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_b32a1d7e-c905-471f-ae80-6f4c0af12aab" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_fedd85b6-60d7-4afb-b37e-ca933e470557" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_8464f9aa-4dfc-4e07-8cb2-9fae4436a692" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_b32a1d7e-c905-471f-ae80-6f4c0af12aab" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_8464f9aa-4dfc-4e07-8cb2-9fae4436a692" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowanceCurrent_f7326fea-edd3-426a-8c84-629ef5d2d780" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowanceCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_b32a1d7e-c905-471f-ae80-6f4c0af12aab" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowanceCurrent_f7326fea-edd3-426a-8c84-629ef5d2d780" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_e76e9118-be87-483e-b409-df33579e828c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwards"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_b32a1d7e-c905-471f-ae80-6f4c0af12aab" xlink:to="loc_us-gaap_OperatingLossCarryforwards_e76e9118-be87-483e-b409-df33579e828c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense_d3e8890f-39fa-42ca-9f0b-fe46bca2a959" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_b32a1d7e-c905-471f-ae80-6f4c0af12aab" xlink:to="loc_us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense_d3e8890f-39fa-42ca-9f0b-fe46bca2a959" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_11afe518-0fd8-4663-b82e-b95cfcb3def7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwardsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_b32a1d7e-c905-471f-ae80-6f4c0af12aab" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_11afe518-0fd8-4663-b82e-b95cfcb3def7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_0b9c7b9d-afe4-43dd-85c6-b9cc25295525" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_11afe518-0fd8-4663-b82e-b95cfcb3def7" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_0b9c7b9d-afe4-43dd-85c6-b9cc25295525" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_0b9c7b9d-afe4-43dd-85c6-b9cc25295525_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_0b9c7b9d-afe4-43dd-85c6-b9cc25295525" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_0b9c7b9d-afe4-43dd-85c6-b9cc25295525_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_b182b6c3-27e4-46f9-8a35-175ca2222505" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_0b9c7b9d-afe4-43dd-85c6-b9cc25295525" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_b182b6c3-27e4-46f9-8a35-175ca2222505" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_f3e0b196-b5ee-48d8-b294-f1b36fff4432" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DomesticCountryMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_b182b6c3-27e4-46f9-8a35-175ca2222505" xlink:to="loc_us-gaap_DomesticCountryMember_f3e0b196-b5ee-48d8-b294-f1b36fff4432" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_21e071fc-0183-47e2-9ec3-514ebdc6d6f4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_b182b6c3-27e4-46f9-8a35-175ca2222505" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_21e071fc-0183-47e2-9ec3-514ebdc6d6f4" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/IncomeTaxesComponentsofLossBeforeIncomeTaxesDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#IncomeTaxesComponentsofLossBeforeIncomeTaxesDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/IncomeTaxesComponentsofLossBeforeIncomeTaxesDetails" xlink:type="extended" id="ie514994421ab432f83e26de0edf44dd3_cf882c34-a429-4894-bd94-a745841b10e5"/>
<link:roleRef roleURI="http://workhorse.com/role/IncomeTaxesReconciliationofStatutoryFederalIncomeTaxDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#IncomeTaxesReconciliationofStatutoryFederalIncomeTaxDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/IncomeTaxesReconciliationofStatutoryFederalIncomeTaxDetails" xlink:type="extended" id="i1dcbdb95ae024b9cbb1d93351ca5fbcd_291ab87b-ea3b-426a-8f14-c3c9eb19d919"/>
<link:roleRef roleURI="http://workhorse.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails" xlink:type="extended" id="i85cce61836084367a25185704c4ca319_5ddf7514-4b0e-4f64-8e72-650401bcd0a5"/>
<link:roleRef roleURI="http://workhorse.com/role/IncomeTaxesUnrecognizedTaxBenefitsDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#IncomeTaxesUnrecognizedTaxBenefitsDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/IncomeTaxesUnrecognizedTaxBenefitsDetails" xlink:type="extended" id="i3bd5605d904f485bbeeb0a7ab7e298fc_fdf1c066-76ba-4c32-82a3-efabe3465d12"/>
<link:roleRef roleURI="http://workhorse.com/role/FairValueMeasurement" xlink:type="simple" xlink:href="wkhs-20191231.xsd#FairValueMeasurement"/>
<link:definitionLink xlink:role="http://workhorse.com/role/FairValueMeasurement" xlink:type="extended" id="i01493b2a2b2942f2b181fc7e65423770_fefdcf77-e1d8-4c1a-8901-7971e396400a"/>
<link:roleRef roleURI="http://workhorse.com/role/FairValueMeasurementTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#FairValueMeasurementTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/FairValueMeasurementTables" xlink:type="extended" id="i8476c158454d49a192f88855293a4f67_a6976971-4a23-4e5a-b1a3-8fc62bc8cc8b"/>
<link:roleRef roleURI="http://workhorse.com/role/FairValueMeasurementWarrantsDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#FairValueMeasurementWarrantsDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/FairValueMeasurementWarrantsDetails" xlink:type="extended" id="i047f85a957d348b2979651c136324e87_873b59f2-4bac-4e2b-b725-811a01ca1efd">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_e4af4ee1-d642-49ec-8ad6-aef9913ce88c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7e35a62b-bbc8-4bf7-84d6-b01423fe6401" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_e4af4ee1-d642-49ec-8ad6-aef9913ce88c" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7e35a62b-bbc8-4bf7-84d6-b01423fe6401" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_839e63ee-de66-4021-9a66-e791274b9b32" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7e35a62b-bbc8-4bf7-84d6-b01423fe6401" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_839e63ee-de66-4021-9a66-e791274b9b32" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_b43bb0a5-8d9e-4ca0-a07d-b029115b7a44" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7e35a62b-bbc8-4bf7-84d6-b01423fe6401" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_b43bb0a5-8d9e-4ca0-a07d-b029115b7a44" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_FairValueMeasurementWithUnobservableInputsReconciliationChangeInFairValue_cc9d5b46-7186-4258-a26a-219d3d173dab" xlink:href="wkhs-20191231.xsd#wkhs_FairValueMeasurementWithUnobservableInputsReconciliationChangeInFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7e35a62b-bbc8-4bf7-84d6-b01423fe6401" xlink:to="loc_wkhs_FairValueMeasurementWithUnobservableInputsReconciliationChangeInFairValue_cc9d5b46-7186-4258-a26a-219d3d173dab" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_FairValueMeasurementWithUnobservableInputsReconciliationReclassificationToAPIC_f6fab048-4907-497a-a533-93147abf9695" xlink:href="wkhs-20191231.xsd#wkhs_FairValueMeasurementWithUnobservableInputsReconciliationReclassificationToAPIC"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_7e35a62b-bbc8-4bf7-84d6-b01423fe6401" xlink:to="loc_wkhs_FairValueMeasurementWithUnobservableInputsReconciliationReclassificationToAPIC_f6fab048-4907-497a-a533-93147abf9695" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_dde2cbc3-0dfa-4e4c-b2bc-1aa31139dd1f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_3f1e08fd-4a31-4ce0-88cc-933088c41cac" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_e4af4ee1-d642-49ec-8ad6-aef9913ce88c" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_3f1e08fd-4a31-4ce0-88cc-933088c41cac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_d07ec2eb-6062-4171-a5af-b208ab794410" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_3f1e08fd-4a31-4ce0-88cc-933088c41cac" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_d07ec2eb-6062-4171-a5af-b208ab794410" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_d07ec2eb-6062-4171-a5af-b208ab794410_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_d07ec2eb-6062-4171-a5af-b208ab794410" xlink:to="loc_us-gaap_EquityComponentDomain_d07ec2eb-6062-4171-a5af-b208ab794410_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_ccb069a3-bfb0-427d-9a67-0def1565cc97" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_d07ec2eb-6062-4171-a5af-b208ab794410" xlink:to="loc_us-gaap_EquityComponentDomain_ccb069a3-bfb0-427d-9a67-0def1565cc97" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_5df11852-f7ad-4a79-8478-b4a931ff834b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WarrantMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_ccb069a3-bfb0-427d-9a67-0def1565cc97" xlink:to="loc_us-gaap_WarrantMember_5df11852-f7ad-4a79-8478-b4a931ff834b" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/FairValueMeasurementConvertibleNoteDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#FairValueMeasurementConvertibleNoteDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/FairValueMeasurementConvertibleNoteDetails" xlink:type="extended" id="i17bdc40d00fe4398ac3653700cc0490d_421315c5-5847-4e38-92f5-df4c93c4e0d0">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_b207e304-d456-4a96-8e33-b60ca5e5441d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_8c93262e-e349-48c3-aae7-35000686105f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_b207e304-d456-4a96-8e33-b60ca5e5441d" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_8c93262e-e349-48c3-aae7-35000686105f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_3aebd6d7-84c1-448c-903f-2067c684bcad" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_8c93262e-e349-48c3-aae7-35000686105f" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_3aebd6d7-84c1-448c-903f-2067c684bcad" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_eb07bb27-9b96-4708-8060-4d4564513b4d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_8c93262e-e349-48c3-aae7-35000686105f" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_eb07bb27-9b96-4708-8060-4d4564513b4d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments_ecfe197c-e34b-4dbe-a46f-26d6aba97c50" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_8c93262e-e349-48c3-aae7-35000686105f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments_ecfe197c-e34b-4dbe-a46f-26d6aba97c50" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_FairValueMeasurementWithUnobservableInputsReconciliationChangeInFairValue_4130742c-1dec-4b4f-bd08-9544ff837e11" xlink:href="wkhs-20191231.xsd#wkhs_FairValueMeasurementWithUnobservableInputsReconciliationChangeInFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_8c93262e-e349-48c3-aae7-35000686105f" xlink:to="loc_wkhs_FairValueMeasurementWithUnobservableInputsReconciliationChangeInFairValue_4130742c-1dec-4b4f-bd08-9544ff837e11" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_c37d9a22-3d82-4bfc-89b6-13184ec2efd4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_92c96566-0ec9-4a92-9396-289605fc840f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_b207e304-d456-4a96-8e33-b60ca5e5441d" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_92c96566-0ec9-4a92-9396-289605fc840f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_1a391191-c02b-4070-829e-955223af7f67" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_92c96566-0ec9-4a92-9396-289605fc840f" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_1a391191-c02b-4070-829e-955223af7f67" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_1a391191-c02b-4070-829e-955223af7f67_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_1a391191-c02b-4070-829e-955223af7f67" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_1a391191-c02b-4070-829e-955223af7f67_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2b798175-8ba0-4878-9d64-c57e65713d19" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_1a391191-c02b-4070-829e-955223af7f67" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2b798175-8ba0-4878-9d64-c57e65713d19" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleNotesPayableMember_77e3d2e9-7b5e-4275-8da8-316890e6eb19" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleNotesPayableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2b798175-8ba0-4878-9d64-c57e65713d19" xlink:to="loc_us-gaap_ConvertibleNotesPayableMember_77e3d2e9-7b5e-4275-8da8-316890e6eb19" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/StockBasedCompensation" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockBasedCompensation"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockBasedCompensation" xlink:type="extended" id="i6bb1e3a6f6444a99924314c69d9cb8e9_5094c1eb-ebcf-4f3b-b171-d1a22c84a62f"/>
<link:roleRef roleURI="http://workhorse.com/role/StockBasedCompensationTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockBasedCompensationTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockBasedCompensationTables" xlink:type="extended" id="i9dc1fac7a80940099969b3e75f00730f_527e4021-d6eb-439d-99c7-fa57de1f07cd"/>
<link:roleRef roleURI="http://workhorse.com/role/StockBasedCompensationDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockBasedCompensationDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockBasedCompensationDetails" xlink:type="extended" id="i499506314100429c8dd68d60de9d860e_77ecf273-f865-46c6-96b4-33284ee39a52">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c050e3f4-533b-4cb1-8a30-c816578b01ea" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StockBasedCompensationTextualAbstract_8aca6ea5-e68f-452f-969f-19076e31d06b" xlink:href="wkhs-20191231.xsd#wkhs_StockBasedCompensationTextualAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c050e3f4-533b-4cb1-8a30-c816578b01ea" xlink:to="loc_wkhs_StockBasedCompensationTextualAbstract_8aca6ea5-e68f-452f-969f-19076e31d06b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_9cb3e131-a9c0-4557-8e3d-713f18a261f3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_StockBasedCompensationTextualAbstract_8aca6ea5-e68f-452f-969f-19076e31d06b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_9cb3e131-a9c0-4557-8e3d-713f18a261f3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_ad6acbd8-4e82-4724-b5d3-b30d18ad3fa8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_StockBasedCompensationTextualAbstract_8aca6ea5-e68f-452f-969f-19076e31d06b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_ad6acbd8-4e82-4724-b5d3-b30d18ad3fa8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedVestingNumber_d4ca2fda-db8f-4ec4-9048-73795a6ac624" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedVestingNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_StockBasedCompensationTextualAbstract_8aca6ea5-e68f-452f-969f-19076e31d06b" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedVestingNumber_d4ca2fda-db8f-4ec4-9048-73795a6ac624" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost_cf366b23-d2a2-4200-9e9d-0b26060a7a99" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_StockBasedCompensationTextualAbstract_8aca6ea5-e68f-452f-969f-19076e31d06b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost_cf366b23-d2a2-4200-9e9d-0b26060a7a99" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_28ef294a-50b2-4892-ad99-eec98f6990dc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_StockBasedCompensationTextualAbstract_8aca6ea5-e68f-452f-969f-19076e31d06b" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_28ef294a-50b2-4892-ad99-eec98f6990dc" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_9fcf02a3-07d3-4f3d-a4d9-ca055987612f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_StockBasedCompensationTextualAbstract_8aca6ea5-e68f-452f-969f-19076e31d06b" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_9fcf02a3-07d3-4f3d-a4d9-ca055987612f" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_20d76f52-475c-4ad7-8bb4-06616091ea39" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_c050e3f4-533b-4cb1-8a30-c816578b01ea" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_20d76f52-475c-4ad7-8bb4-06616091ea39" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_f559086e-ec02-4a93-82cc-c7887b4a7da3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_20d76f52-475c-4ad7-8bb4-06616091ea39" xlink:to="loc_us-gaap_AwardTypeAxis_f559086e-ec02-4a93-82cc-c7887b4a7da3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f559086e-ec02-4a93-82cc-c7887b4a7da3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_f559086e-ec02-4a93-82cc-c7887b4a7da3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f559086e-ec02-4a93-82cc-c7887b4a7da3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9132343f-fbcc-49d7-96dd-9bc19dd2cf1a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_f559086e-ec02-4a93-82cc-c7887b4a7da3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9132343f-fbcc-49d7-96dd-9bc19dd2cf1a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_991e2344-8f77-4af2-8fb5-a18c402dcfd4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9132343f-fbcc-49d7-96dd-9bc19dd2cf1a" xlink:to="loc_us-gaap_EmployeeStockOptionMember_991e2344-8f77-4af2-8fb5-a18c402dcfd4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_3654ce4d-f845-4f34-863d-e7314c0e9f03" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9132343f-fbcc-49d7-96dd-9bc19dd2cf1a" xlink:to="loc_us-gaap_RestrictedStockMember_3654ce4d-f845-4f34-863d-e7314c0e9f03" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_42c319b6-4daa-4f81-90a3-8120b03a5cca" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_20d76f52-475c-4ad7-8bb4-06616091ea39" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_42c319b6-4daa-4f81-90a3-8120b03a5cca" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_42c319b6-4daa-4f81-90a3-8120b03a5cca_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_42c319b6-4daa-4f81-90a3-8120b03a5cca" xlink:to="loc_us-gaap_EquityComponentDomain_42c319b6-4daa-4f81-90a3-8120b03a5cca_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_c696e694-4d4b-4b29-a8e9-f4f5c658ff08" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_42c319b6-4daa-4f81-90a3-8120b03a5cca" xlink:to="loc_us-gaap_EquityComponentDomain_c696e694-4d4b-4b29-a8e9-f4f5c658ff08" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_d3c9d610-eaf5-4f36-a14c-583063f3ade2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WarrantMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_c696e694-4d4b-4b29-a8e9-f4f5c658ff08" xlink:to="loc_us-gaap_WarrantMember_d3c9d610-eaf5-4f36-a14c-583063f3ade2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_e71c06a0-3e61-40bb-8764-a6187dcdbc65" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_20d76f52-475c-4ad7-8bb4-06616091ea39" xlink:to="loc_srt_TitleOfIndividualAxis_e71c06a0-3e61-40bb-8764-a6187dcdbc65" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_e71c06a0-3e61-40bb-8764-a6187dcdbc65_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_e71c06a0-3e61-40bb-8764-a6187dcdbc65" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_e71c06a0-3e61-40bb-8764-a6187dcdbc65_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_2fbb4f08-d951-4ccc-95cc-ae528403433e" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_e71c06a0-3e61-40bb-8764-a6187dcdbc65" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_2fbb4f08-d951-4ccc-95cc-ae528403433e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DirectorsOfficersConsultantsAndEmployeesMember_e0fe9edd-d9cf-4098-804e-72f9c824872a" xlink:href="wkhs-20191231.xsd#wkhs_DirectorsOfficersConsultantsAndEmployeesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_2fbb4f08-d951-4ccc-95cc-ae528403433e" xlink:to="loc_wkhs_DirectorsOfficersConsultantsAndEmployeesMember_e0fe9edd-d9cf-4098-804e-72f9c824872a" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/StockBasedCompensationShareBasedCompensationExpenseDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockBasedCompensationShareBasedCompensationExpenseDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockBasedCompensationShareBasedCompensationExpenseDetails" xlink:type="extended" id="i9667ed42603a4fc98cf9d8419181460b_e77d3672-17d7-4be3-afe3-275d63d62b1f">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a088ed26-2cae-4419-a84b-2a3320d899e1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_3266356f-c4cc-4289-a74e-b928c8857242" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a088ed26-2cae-4419-a84b-2a3320d899e1" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_3266356f-c4cc-4289-a74e-b928c8857242" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_d70f5dff-78dd-4dda-aa29-4eea4ac8854a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_a088ed26-2cae-4419-a84b-2a3320d899e1" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_d70f5dff-78dd-4dda-aa29-4eea4ac8854a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_10c838eb-d5ef-402b-9e33-a6fdbb4f21a1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_d70f5dff-78dd-4dda-aa29-4eea4ac8854a" xlink:to="loc_us-gaap_AwardTypeAxis_10c838eb-d5ef-402b-9e33-a6fdbb4f21a1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_10c838eb-d5ef-402b-9e33-a6fdbb4f21a1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_10c838eb-d5ef-402b-9e33-a6fdbb4f21a1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_10c838eb-d5ef-402b-9e33-a6fdbb4f21a1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f72da058-e71c-4412-9691-b517a636f6fe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_10c838eb-d5ef-402b-9e33-a6fdbb4f21a1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f72da058-e71c-4412-9691-b517a636f6fe" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_b18175ad-e49d-4c5b-93a9-959d3746e741" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f72da058-e71c-4412-9691-b517a636f6fe" xlink:to="loc_us-gaap_RestrictedStockMember_b18175ad-e49d-4c5b-93a9-959d3746e741" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_1f0859f2-d2f4-43c7-ba81-ee764767ca01" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f72da058-e71c-4412-9691-b517a636f6fe" xlink:to="loc_us-gaap_EmployeeStockOptionMember_1f0859f2-d2f4-43c7-ba81-ee764767ca01" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/StockBasedCompensationStockOptionActivityDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockBasedCompensationStockOptionActivityDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockBasedCompensationStockOptionActivityDetails" xlink:type="extended" id="i61f4b0b5a8ba4c7882a206b9fe23663a_ca9775b5-dfcd-476d-8427-135fc6d0aded">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_74767b33-76a5-4a36-b78a-fd5c8d157eb1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1c40810c-42da-48f8-8cc9-f47578855cd2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_74767b33-76a5-4a36-b78a-fd5c8d157eb1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1c40810c-42da-48f8-8cc9-f47578855cd2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_f85bfb98-8433-4305-b381-887e98b0be45" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1c40810c-42da-48f8-8cc9-f47578855cd2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_f85bfb98-8433-4305-b381-887e98b0be45" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_1a854a24-2ba6-4fa1-b98a-5edaf1a1e3f3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1c40810c-42da-48f8-8cc9-f47578855cd2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_1a854a24-2ba6-4fa1-b98a-5edaf1a1e3f3" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_46e99669-1515-438a-8df8-fd3f70987b6a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1c40810c-42da-48f8-8cc9-f47578855cd2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_46e99669-1515-438a-8df8-fd3f70987b6a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_87446ca3-e77a-4d6c-b3e0-a01cf4360f6b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1c40810c-42da-48f8-8cc9-f47578855cd2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_87446ca3-e77a-4d6c-b3e0-a01cf4360f6b" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_48b7d775-97b8-4a94-8c6b-b93916d93189" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1c40810c-42da-48f8-8cc9-f47578855cd2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_48b7d775-97b8-4a94-8c6b-b93916d93189" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_914bbb56-8af6-42f8-9079-9a75a3765f22" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_73b0f953-cfcb-466d-987a-41896d8bdce8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_74767b33-76a5-4a36-b78a-fd5c8d157eb1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_73b0f953-cfcb-466d-987a-41896d8bdce8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_0355abb3-5a1c-424b-9380-72499832182f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_73b0f953-cfcb-466d-987a-41896d8bdce8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_0355abb3-5a1c-424b-9380-72499832182f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_b4a23c13-e5d9-46cc-ba77-4fa525a42e96" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_73b0f953-cfcb-466d-987a-41896d8bdce8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_b4a23c13-e5d9-46cc-ba77-4fa525a42e96" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_f0568838-1339-4189-8294-46660f8f7782" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_73b0f953-cfcb-466d-987a-41896d8bdce8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_f0568838-1339-4189-8294-46660f8f7782" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_a960cb0a-1224-40da-84a7-b3237b0f5bd7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_73b0f953-cfcb-466d-987a-41896d8bdce8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_a960cb0a-1224-40da-84a7-b3237b0f5bd7" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_a2ec9c55-6a24-4cf5-b029-2fa30da25fb5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_73b0f953-cfcb-466d-987a-41896d8bdce8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_a2ec9c55-6a24-4cf5-b029-2fa30da25fb5" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_f44ffadb-b3eb-440d-935b-fb100f932593" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValueRollForward_68bf281d-f6c9-4623-9350-e5a60db23db5" xlink:href="wkhs-20191231.xsd#wkhs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValueRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_74767b33-76a5-4a36-b78a-fd5c8d157eb1" xlink:to="loc_wkhs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValueRollForward_68bf281d-f6c9-4623-9350-e5a60db23db5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_bdb6a10c-fa7e-4683-90eb-94bef60a4476" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValueRollForward_68bf281d-f6c9-4623-9350-e5a60db23db5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_bdb6a10c-fa7e-4683-90eb-94bef60a4476" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_fea20856-0ee9-4911-86f7-de4ae67b8da9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_74767b33-76a5-4a36-b78a-fd5c8d157eb1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_fea20856-0ee9-4911-86f7-de4ae67b8da9" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_6e093a6e-1690-4f5d-89da-585c0c64cd83" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_74767b33-76a5-4a36-b78a-fd5c8d157eb1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_6e093a6e-1690-4f5d-89da-585c0c64cd83" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_f22a2d93-c9e1-4e7f-bb7e-eb8fb92502b1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_74767b33-76a5-4a36-b78a-fd5c8d157eb1" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_f22a2d93-c9e1-4e7f-bb7e-eb8fb92502b1" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e42e32d3-2e48-45d5-857d-f91b861eea8e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_74767b33-76a5-4a36-b78a-fd5c8d157eb1" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e42e32d3-2e48-45d5-857d-f91b861eea8e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_e41402ef-fb17-489e-b8e8-c75f33ac65ef" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e42e32d3-2e48-45d5-857d-f91b861eea8e" xlink:to="loc_us-gaap_AwardTypeAxis_e41402ef-fb17-489e-b8e8-c75f33ac65ef" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e41402ef-fb17-489e-b8e8-c75f33ac65ef_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_e41402ef-fb17-489e-b8e8-c75f33ac65ef" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e41402ef-fb17-489e-b8e8-c75f33ac65ef_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f47a84b9-81e5-4ebc-a248-d1f59eb50cd8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_e41402ef-fb17-489e-b8e8-c75f33ac65ef" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f47a84b9-81e5-4ebc-a248-d1f59eb50cd8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_4854cd9e-7c64-4ec2-bc28-c0e66cb792c2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f47a84b9-81e5-4ebc-a248-d1f59eb50cd8" xlink:to="loc_us-gaap_EmployeeStockOptionMember_4854cd9e-7c64-4ec2-bc28-c0e66cb792c2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_3d4420a9-102e-4399-88cb-1eafd28f92c8" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e42e32d3-2e48-45d5-857d-f91b861eea8e" xlink:to="loc_srt_TitleOfIndividualAxis_3d4420a9-102e-4399-88cb-1eafd28f92c8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_3d4420a9-102e-4399-88cb-1eafd28f92c8_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_3d4420a9-102e-4399-88cb-1eafd28f92c8" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_3d4420a9-102e-4399-88cb-1eafd28f92c8_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_57b0262a-75cd-4b54-83e5-b40795c05e7a" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_3d4420a9-102e-4399-88cb-1eafd28f92c8" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_57b0262a-75cd-4b54-83e5-b40795c05e7a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DirectorsOfficersConsultantsAndEmployeesMember_b213ba10-73bf-46d5-a9d5-da62d15f091a" xlink:href="wkhs-20191231.xsd#wkhs_DirectorsOfficersConsultantsAndEmployeesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_57b0262a-75cd-4b54-83e5-b40795c05e7a" xlink:to="loc_wkhs_DirectorsOfficersConsultantsAndEmployeesMember_b213ba10-73bf-46d5-a9d5-da62d15f091a" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/StockBasedCompensationRestrictedStockDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockBasedCompensationRestrictedStockDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockBasedCompensationRestrictedStockDetails" xlink:type="extended" id="i68556823f8424f04b6274ca9e4d49c97_419fee74-f3db-42d1-81db-3771feec16d0">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_02663b28-f908-412b-81cf-08795cc693f9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_e750f036-930d-44d7-9abc-71528ffac21b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_02663b28-f908-412b-81cf-08795cc693f9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_e750f036-930d-44d7-9abc-71528ffac21b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_e567d00b-76f1-4444-95cc-79f94e5ca060" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_e750f036-930d-44d7-9abc-71528ffac21b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_e567d00b-76f1-4444-95cc-79f94e5ca060" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_ff54c1e5-7453-4e82-9b25-d584ad827138" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_e750f036-930d-44d7-9abc-71528ffac21b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_ff54c1e5-7453-4e82-9b25-d584ad827138" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_1f1a15e9-c87e-4780-8d59-e4683f185f56" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_e750f036-930d-44d7-9abc-71528ffac21b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_1f1a15e9-c87e-4780-8d59-e4683f185f56" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_6f7576d2-f3e6-4dbb-ba33-745670fd387b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_e750f036-930d-44d7-9abc-71528ffac21b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_6f7576d2-f3e6-4dbb-ba33-745670fd387b" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_05dd2fd2-9a03-4074-8078-65eba1b44944" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01e9a789-d20e-4e62-8205-4c38a17aebe2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_02663b28-f908-412b-81cf-08795cc693f9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01e9a789-d20e-4e62-8205-4c38a17aebe2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_18e74915-5510-4fa0-a332-15c386b1a47d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01e9a789-d20e-4e62-8205-4c38a17aebe2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_18e74915-5510-4fa0-a332-15c386b1a47d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0ac95cf8-c1d6-4a68-9f8f-f6038816d085" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01e9a789-d20e-4e62-8205-4c38a17aebe2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0ac95cf8-c1d6-4a68-9f8f-f6038816d085" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_SharesBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageGrantDateFairValue_a6c0c40d-1550-4f2f-a02a-3d884b25e9f2" xlink:href="wkhs-20191231.xsd#wkhs_SharesBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01e9a789-d20e-4e62-8205-4c38a17aebe2" xlink:to="loc_wkhs_SharesBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageGrantDateFairValue_a6c0c40d-1550-4f2f-a02a-3d884b25e9f2" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ef74136e-d91d-4aa5-bf29-850d34d5bc88" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01e9a789-d20e-4e62-8205-4c38a17aebe2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ef74136e-d91d-4aa5-bf29-850d34d5bc88" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_19cdc2c2-69e5-4c5b-894c-025090986ef6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fee827bb-4509-4c83-865a-4ef5f2de688a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_02663b28-f908-412b-81cf-08795cc693f9" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fee827bb-4509-4c83-865a-4ef5f2de688a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_3767f731-5372-4b30-bb9c-5937d0beaee2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_fee827bb-4509-4c83-865a-4ef5f2de688a" xlink:to="loc_us-gaap_AwardTypeAxis_3767f731-5372-4b30-bb9c-5937d0beaee2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3767f731-5372-4b30-bb9c-5937d0beaee2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_3767f731-5372-4b30-bb9c-5937d0beaee2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3767f731-5372-4b30-bb9c-5937d0beaee2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_58c15b55-625f-4fc0-99d9-b3e91ad603bb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_3767f731-5372-4b30-bb9c-5937d0beaee2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_58c15b55-625f-4fc0-99d9-b3e91ad603bb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockMember_8190e5b8-5c49-436f-8911-7f83b06ffc64" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_58c15b55-625f-4fc0-99d9-b3e91ad603bb" xlink:to="loc_us-gaap_RestrictedStockMember_8190e5b8-5c49-436f-8911-7f83b06ffc64" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/RecentPronouncements" xlink:type="simple" xlink:href="wkhs-20191231.xsd#RecentPronouncements"/>
<link:definitionLink xlink:role="http://workhorse.com/role/RecentPronouncements" xlink:type="extended" id="i5fdb2d27f75f4fd68c712dc7e472d4fa_eef10f9c-0f30-4222-b5f2-bb44fac58fd2"/>
<link:roleRef roleURI="http://workhorse.com/role/StockholdersEquity" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockholdersEquity"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockholdersEquity" xlink:type="extended" id="i97a43b2bd3934ef4b2555423bfd7467f_2a383a8c-95e3-41c5-8278-79561e1db500"/>
<link:roleRef roleURI="http://workhorse.com/role/StockholdersEquityTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockholdersEquityTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockholdersEquityTables" xlink:type="extended" id="i783a0bd5b0a240c2a8bb7c2f00d0611a_cd50ab95-f611-40ff-b26d-276f33525395"/>
<link:roleRef roleURI="http://workhorse.com/role/StockholdersEquityDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockholdersEquityDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockholdersEquityDetails" xlink:type="extended" id="i02fd3352db8f43419522c4e2704d0fdf_fc37b781-f9e0-4550-b1b5-a9c46f758a93">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_MaximumOfferingValueUnder2017CowenAgreement_c6f83269-198d-4115-8719-3eb8f845c883" xlink:href="wkhs-20191231.xsd#wkhs_MaximumOfferingValueUnder2017CowenAgreement"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_wkhs_MaximumOfferingValueUnder2017CowenAgreement_c6f83269-198d-4115-8719-3eb8f845c883" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_SharesIssuedFromProceedsFacility_413635f7-867e-4df0-b0e9-c2254b45ed42" xlink:href="wkhs-20191231.xsd#wkhs_SharesIssuedFromProceedsFacility"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_wkhs_SharesIssuedFromProceedsFacility_413635f7-867e-4df0-b0e9-c2254b45ed42" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_SharesIssuedValueFromProceedsFacility_6fa12139-731b-45c9-b8df-1b95fb539c0b" xlink:href="wkhs-20191231.xsd#wkhs_SharesIssuedValueFromProceedsFacility"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_wkhs_SharesIssuedValueFromProceedsFacility_6fa12139-731b-45c9-b8df-1b95fb539c0b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_PurchaseOfAdditionalCommonStock_25b59b66-b667-46df-a0ae-a17308e0128d" xlink:href="wkhs-20191231.xsd#wkhs_PurchaseOfAdditionalCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_wkhs_PurchaseOfAdditionalCommonStock_25b59b66-b667-46df-a0ae-a17308e0128d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CommonStockPurchasePrice_1cdb1d56-cd3b-429c-8cd1-88b111d22f5c" xlink:href="wkhs-20191231.xsd#wkhs_CommonStockPurchasePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_wkhs_CommonStockPurchasePrice_1cdb1d56-cd3b-429c-8cd1-88b111d22f5c" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_0319ef75-ae4d-4337-9560-5631a9d3a5a6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockPricePerShare"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_us-gaap_SaleOfStockPricePerShare_0319ef75-ae4d-4337-9560-5631a9d3a5a6" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AggregateCommonStockInExchangeForWarrants_4a1c173b-6c64-4aaf-90c6-496cfd26a23b" xlink:href="wkhs-20191231.xsd#wkhs_AggregateCommonStockInExchangeForWarrants"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_wkhs_AggregateCommonStockInExchangeForWarrants_4a1c173b-6c64-4aaf-90c6-496cfd26a23b" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StrikePriceOfWarrants_4e80966a-e859-4711-a7ef-e41986f0528f" xlink:href="wkhs-20191231.xsd#wkhs_StrikePriceOfWarrants"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_wkhs_StrikePriceOfWarrants_4e80966a-e859-4711-a7ef-e41986f0528f" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Dividends_51484398-fce8-4068-acc2-ca7deef63f47" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Dividends"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_us-gaap_Dividends_51484398-fce8-4068-acc2-ca7deef63f47" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_77ec14af-00ac-4c5f-98ab-f7c681083ab0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_77ec14af-00ac-4c5f-98ab-f7c681083ab0" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_37ae512a-12a1-4201-b451-80728e7c7674" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_37ae512a-12a1-4201-b451-80728e7c7674" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_ClassOfWarrantOrRightIssued_3eb93455-3ee5-45ee-a863-5886ddcfbf00" xlink:href="wkhs-20191231.xsd#wkhs_ClassOfWarrantOrRightIssued"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_wkhs_ClassOfWarrantOrRightIssued_3eb93455-3ee5-45ee-a863-5886ddcfbf00" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_15ae7fd9-95f7-4c32-aef5-5fef92b76c8a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfStockByClassTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_9eab04ab-ea16-4570-aad4-b7551eddf881" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_15ae7fd9-95f7-4c32-aef5-5fef92b76c8a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_dc85fa24-a7cc-4415-b6c6-1fbe1d03675c" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_15ae7fd9-95f7-4c32-aef5-5fef92b76c8a" xlink:to="loc_srt_RangeAxis_dc85fa24-a7cc-4415-b6c6-1fbe1d03675c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_dc85fa24-a7cc-4415-b6c6-1fbe1d03675c_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_dc85fa24-a7cc-4415-b6c6-1fbe1d03675c" xlink:to="loc_srt_RangeMember_dc85fa24-a7cc-4415-b6c6-1fbe1d03675c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_75b8b6b3-0271-4414-90a1-53ce8796cf30" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_dc85fa24-a7cc-4415-b6c6-1fbe1d03675c" xlink:to="loc_srt_RangeMember_75b8b6b3-0271-4414-90a1-53ce8796cf30" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_cb95be19-84df-4747-a778-c4853b0efbbb" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_75b8b6b3-0271-4414-90a1-53ce8796cf30" xlink:to="loc_srt_MinimumMember_cb95be19-84df-4747-a778-c4853b0efbbb" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_337cc8f7-4a14-4950-bf7f-9f6466bb89d9" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_75b8b6b3-0271-4414-90a1-53ce8796cf30" xlink:to="loc_srt_MaximumMember_337cc8f7-4a14-4950-bf7f-9f6466bb89d9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AgreementAxis_a79a8c68-afee-4e05-9a06-445751514d7f" xlink:href="wkhs-20191231.xsd#wkhs_AgreementAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_15ae7fd9-95f7-4c32-aef5-5fef92b76c8a" xlink:to="loc_wkhs_AgreementAxis_a79a8c68-afee-4e05-9a06-445751514d7f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AgreementDomain_a79a8c68-afee-4e05-9a06-445751514d7f_default" xlink:href="wkhs-20191231.xsd#wkhs_AgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_wkhs_AgreementAxis_a79a8c68-afee-4e05-9a06-445751514d7f" xlink:to="loc_wkhs_AgreementDomain_a79a8c68-afee-4e05-9a06-445751514d7f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AgreementDomain_cc5f6bf9-10f8-4f51-9185-21c5778f1d0e" xlink:href="wkhs-20191231.xsd#wkhs_AgreementDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_wkhs_AgreementAxis_a79a8c68-afee-4e05-9a06-445751514d7f" xlink:to="loc_wkhs_AgreementDomain_cc5f6bf9-10f8-4f51-9185-21c5778f1d0e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CowenAgreementMember_f8137a00-082a-4b8e-9918-29d296ccf433" xlink:href="wkhs-20191231.xsd#wkhs_CowenAgreementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_AgreementDomain_cc5f6bf9-10f8-4f51-9185-21c5778f1d0e" xlink:to="loc_wkhs_CowenAgreementMember_f8137a00-082a-4b8e-9918-29d296ccf433" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_SubscriptionAgreementsMember_3654f9fe-cac4-416a-8719-5b873eb18bb3" xlink:href="wkhs-20191231.xsd#wkhs_SubscriptionAgreementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_AgreementDomain_cc5f6bf9-10f8-4f51-9185-21c5778f1d0e" xlink:to="loc_wkhs_SubscriptionAgreementsMember_3654f9fe-cac4-416a-8719-5b873eb18bb3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_f38c2bcd-e4b5-44e4-ace6-bc1aef18f671" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_15ae7fd9-95f7-4c32-aef5-5fef92b76c8a" xlink:to="loc_srt_TitleOfIndividualAxis_f38c2bcd-e4b5-44e4-ace6-bc1aef18f671" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_f38c2bcd-e4b5-44e4-ace6-bc1aef18f671_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_f38c2bcd-e4b5-44e4-ace6-bc1aef18f671" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_f38c2bcd-e4b5-44e4-ace6-bc1aef18f671_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_82a00019-6005-4af7-b3af-b29109bd0d4f" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_f38c2bcd-e4b5-44e4-ace6-bc1aef18f671" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_82a00019-6005-4af7-b3af-b29109bd0d4f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_BenjaminSamuelsMember_a5740020-d366-467b-9e84-c3c63282c0ef" xlink:href="wkhs-20191231.xsd#wkhs_BenjaminSamuelsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_82a00019-6005-4af7-b3af-b29109bd0d4f" xlink:to="loc_wkhs_BenjaminSamuelsMember_a5740020-d366-467b-9e84-c3c63282c0ef" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_GeraldBuddeMember_c661c141-6d7b-49cb-97b1-c8d57430664d" xlink:href="wkhs-20191231.xsd#wkhs_GeraldBuddeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_82a00019-6005-4af7-b3af-b29109bd0d4f" xlink:to="loc_wkhs_GeraldBuddeMember_c661c141-6d7b-49cb-97b1-c8d57430664d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_08f2b4ff-f4cf-47af-a6b3-2b1220af6ca3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_15ae7fd9-95f7-4c32-aef5-5fef92b76c8a" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_08f2b4ff-f4cf-47af-a6b3-2b1220af6ca3" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_08f2b4ff-f4cf-47af-a6b3-2b1220af6ca3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_08f2b4ff-f4cf-47af-a6b3-2b1220af6ca3" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_08f2b4ff-f4cf-47af-a6b3-2b1220af6ca3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_8237b7b8-c9e4-4ac3-baea-17ccdc30cb29" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_08f2b4ff-f4cf-47af-a6b3-2b1220af6ca3" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_8237b7b8-c9e4-4ac3-baea-17ccdc30cb29" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrivatePlacementMember_570a943b-3ee4-48eb-b5e2-796c6c7a3be2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrivatePlacementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_8237b7b8-c9e4-4ac3-baea-17ccdc30cb29" xlink:to="loc_us-gaap_PrivatePlacementMember_570a943b-3ee4-48eb-b5e2-796c6c7a3be2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CowenAgreementMember_8592ee97-c8f7-423a-9b94-dd2a85404b8f" xlink:href="wkhs-20191231.xsd#wkhs_CowenAgreementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_8237b7b8-c9e4-4ac3-baea-17ccdc30cb29" xlink:to="loc_wkhs_CowenAgreementMember_8592ee97-c8f7-423a-9b94-dd2a85404b8f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_RegisteredPublicOfferingMember_7f514085-c585-4b58-b370-12cea4e2d195" xlink:href="wkhs-20191231.xsd#wkhs_RegisteredPublicOfferingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_8237b7b8-c9e4-4ac3-baea-17ccdc30cb29" xlink:to="loc_wkhs_RegisteredPublicOfferingMember_7f514085-c585-4b58-b370-12cea4e2d195" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OverAllotmentOptionMember_7fd1daa6-c221-43a2-8af1-e386c9d60099" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OverAllotmentOptionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_8237b7b8-c9e4-4ac3-baea-17ccdc30cb29" xlink:to="loc_us-gaap_OverAllotmentOptionMember_7fd1daa6-c221-43a2-8af1-e386c9d60099" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_b25f850b-ca64-45db-bb6b-3f65f46e5e9f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_15ae7fd9-95f7-4c32-aef5-5fef92b76c8a" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_b25f850b-ca64-45db-bb6b-3f65f46e5e9f" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_b25f850b-ca64-45db-bb6b-3f65f46e5e9f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_b25f850b-ca64-45db-bb6b-3f65f46e5e9f" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_b25f850b-ca64-45db-bb6b-3f65f46e5e9f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_c6bbbd13-4660-45ea-8fe8-fc329848a6f5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_b25f850b-ca64-45db-bb6b-3f65f46e5e9f" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_c6bbbd13-4660-45ea-8fe8-fc329848a6f5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleNotesPayableMember_300d53c2-422a-46a6-92ea-e3975cd8665b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleNotesPayableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_c6bbbd13-4660-45ea-8fe8-fc329848a6f5" xlink:to="loc_us-gaap_ConvertibleNotesPayableMember_300d53c2-422a-46a6-92ea-e3975cd8665b" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/StockholdersEquityWarrantsDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#StockholdersEquityWarrantsDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/StockholdersEquityWarrantsDetails" xlink:type="extended" id="i89a74713b4e244198e4c0cf8266b2395_9140a240-ce3e-442d-9a01-75e8d34db291">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightLineItems_ca030104-6578-4dd4-8c13-c5561db025d0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfWarrantOrRightLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_51a393d7-f01f-40c8-a524-32b3e67c2d67" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_ca030104-6578-4dd4-8c13-c5561db025d0" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_51a393d7-f01f-40c8-a524-32b3e67c2d67" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WarrantOrRightOutstandingNumber_6e497a05-793c-4ce1-a5d5-d35cc6fef7f5" xlink:href="wkhs-20191231.xsd#wkhs_WarrantOrRightOutstandingNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_51a393d7-f01f-40c8-a524-32b3e67c2d67" xlink:to="loc_wkhs_WarrantOrRightOutstandingNumber_6e497a05-793c-4ce1-a5d5-d35cc6fef7f5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_NumberOfWarrantsGrantedArosaLoanAgreement_639abda6-74b3-4774-a587-235e16f19a21" xlink:href="wkhs-20191231.xsd#wkhs_NumberOfWarrantsGrantedArosaLoanAgreement"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_51a393d7-f01f-40c8-a524-32b3e67c2d67" xlink:to="loc_wkhs_NumberOfWarrantsGrantedArosaLoanAgreement_639abda6-74b3-4774-a587-235e16f19a21" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_NumberOfWarrantsGrantedMarathonDebt_bd5d0cdc-e0ac-4aa4-8c07-025790c7e5c6" xlink:href="wkhs-20191231.xsd#wkhs_NumberOfWarrantsGrantedMarathonDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_51a393d7-f01f-40c8-a524-32b3e67c2d67" xlink:to="loc_wkhs_NumberOfWarrantsGrantedMarathonDebt_bd5d0cdc-e0ac-4aa4-8c07-025790c7e5c6" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WarrantOrRightExercisedNumber_6090234d-b683-4131-b9fc-9dbcf2268449" xlink:href="wkhs-20191231.xsd#wkhs_WarrantOrRightExercisedNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_51a393d7-f01f-40c8-a524-32b3e67c2d67" xlink:to="loc_wkhs_WarrantOrRightExercisedNumber_6090234d-b683-4131-b9fc-9dbcf2268449" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_NumberOfWarrantsGrantedSeriesBPreferredStock_7241d118-0a5a-4add-bc8d-9fd8517d8793" xlink:href="wkhs-20191231.xsd#wkhs_NumberOfWarrantsGrantedSeriesBPreferredStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_51a393d7-f01f-40c8-a524-32b3e67c2d67" xlink:to="loc_wkhs_NumberOfWarrantsGrantedSeriesBPreferredStock_7241d118-0a5a-4add-bc8d-9fd8517d8793" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_NumberOfWarrantsGrantedOther_1bebf49e-5966-4d1c-9fdb-395f5c938278" xlink:href="wkhs-20191231.xsd#wkhs_NumberOfWarrantsGrantedOther"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_51a393d7-f01f-40c8-a524-32b3e67c2d67" xlink:to="loc_wkhs_NumberOfWarrantsGrantedOther_1bebf49e-5966-4d1c-9fdb-395f5c938278" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WarrantOrRightOutstandingNumber_90a2a161-eec5-4910-93df-8c7eacce35ff" xlink:href="wkhs-20191231.xsd#wkhs_WarrantOrRightOutstandingNumber"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WeightedAverageExercisePricePerWarrantAbstract_f2609096-14fe-4208-a3a8-5f606d1c9c44" xlink:href="wkhs-20191231.xsd#wkhs_WeightedAverageExercisePricePerWarrantAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_ca030104-6578-4dd4-8c13-c5561db025d0" xlink:to="loc_wkhs_WeightedAverageExercisePricePerWarrantAbstract_f2609096-14fe-4208-a3a8-5f606d1c9c44" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WeightedAverageExercisePricePerWarrantOutstanding_028fd072-87a2-4a1a-95c1-3751838a4b40" xlink:href="wkhs-20191231.xsd#wkhs_WeightedAverageExercisePricePerWarrantOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_WeightedAverageExercisePricePerWarrantAbstract_f2609096-14fe-4208-a3a8-5f606d1c9c44" xlink:to="loc_wkhs_WeightedAverageExercisePricePerWarrantOutstanding_028fd072-87a2-4a1a-95c1-3751838a4b40" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WeightedAverageExercisePricePerWarrantGrantedArosaLoanAgreement_ab3cac38-cd44-4923-9f8c-551d62d6ccff" xlink:href="wkhs-20191231.xsd#wkhs_WeightedAverageExercisePricePerWarrantGrantedArosaLoanAgreement"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_WeightedAverageExercisePricePerWarrantAbstract_f2609096-14fe-4208-a3a8-5f606d1c9c44" xlink:to="loc_wkhs_WeightedAverageExercisePricePerWarrantGrantedArosaLoanAgreement_ab3cac38-cd44-4923-9f8c-551d62d6ccff" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WeightedAverageExercisePricePerWarrantGrantedMarathonDebt_032e43a7-e724-4e12-ab5e-d3098060bc26" xlink:href="wkhs-20191231.xsd#wkhs_WeightedAverageExercisePricePerWarrantGrantedMarathonDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_WeightedAverageExercisePricePerWarrantAbstract_f2609096-14fe-4208-a3a8-5f606d1c9c44" xlink:to="loc_wkhs_WeightedAverageExercisePricePerWarrantGrantedMarathonDebt_032e43a7-e724-4e12-ab5e-d3098060bc26" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WeightedAverageExercisePricePerWarrantExercised_2526fe86-b122-42a2-bed4-11c7b12be475" xlink:href="wkhs-20191231.xsd#wkhs_WeightedAverageExercisePricePerWarrantExercised"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_WeightedAverageExercisePricePerWarrantAbstract_f2609096-14fe-4208-a3a8-5f606d1c9c44" xlink:to="loc_wkhs_WeightedAverageExercisePricePerWarrantExercised_2526fe86-b122-42a2-bed4-11c7b12be475" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WeightedAverageExercisePricePerWarrantGrantedSeriesBPreferredStock_3c54dbe0-1d84-43d3-92e7-e66d64563348" xlink:href="wkhs-20191231.xsd#wkhs_WeightedAverageExercisePricePerWarrantGrantedSeriesBPreferredStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_WeightedAverageExercisePricePerWarrantAbstract_f2609096-14fe-4208-a3a8-5f606d1c9c44" xlink:to="loc_wkhs_WeightedAverageExercisePricePerWarrantGrantedSeriesBPreferredStock_3c54dbe0-1d84-43d3-92e7-e66d64563348" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_WeightedAverageExercisePricePerWarrantOutstanding_70ad21f3-d645-4a20-9360-c59e2546cc18" xlink:href="wkhs-20191231.xsd#wkhs_WeightedAverageExercisePricePerWarrantOutstanding"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightTable_1bccc999-49a5-461e-99dc-29b6f7b5006f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfWarrantOrRightTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_ca030104-6578-4dd4-8c13-c5561db025d0" xlink:to="loc_us-gaap_ClassOfWarrantOrRightTable_1bccc999-49a5-461e-99dc-29b6f7b5006f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_6cf3433a-34ed-48d7-b101-3e5b92d316b6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_1bccc999-49a5-461e-99dc-29b6f7b5006f" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_6cf3433a-34ed-48d7-b101-3e5b92d316b6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_6cf3433a-34ed-48d7-b101-3e5b92d316b6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_6cf3433a-34ed-48d7-b101-3e5b92d316b6" xlink:to="loc_us-gaap_EquityComponentDomain_6cf3433a-34ed-48d7-b101-3e5b92d316b6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_0b3628db-036f-44c8-a93d-73e9a7859161" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_6cf3433a-34ed-48d7-b101-3e5b92d316b6" xlink:to="loc_us-gaap_EquityComponentDomain_0b3628db-036f-44c8-a93d-73e9a7859161" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_f750ef7d-dccd-4cdb-90f3-8c7a1354cfe2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WarrantMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0b3628db-036f-44c8-a93d-73e9a7859161" xlink:to="loc_us-gaap_WarrantMember_f750ef7d-dccd-4cdb-90f3-8c7a1354cfe2" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/RelatedParties" xlink:type="simple" xlink:href="wkhs-20191231.xsd#RelatedParties"/>
<link:definitionLink xlink:role="http://workhorse.com/role/RelatedParties" xlink:type="extended" id="i01cb7cdfa6a3476da00ac6a2f0e2d292_391d3afa-ba9d-4cc6-8e66-9ca940686aa8"/>
<link:roleRef roleURI="http://workhorse.com/role/RelatedPartiesDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#RelatedPartiesDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/RelatedPartiesDetails" xlink:type="extended" id="i063c3ff3dcc74578ae7bf26fab89d801_fd9633bb-1043-4107-b178-742b67cd2ac8">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_ba1c84ff-8998-4991-bb3e-1351b39ea5a6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_PaymentsForBusinessAndCasualtyInsurance_f70e6b7d-06ad-47e7-9094-8cb72bf52f3f" xlink:href="wkhs-20191231.xsd#wkhs_PaymentsForBusinessAndCasualtyInsurance"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ba1c84ff-8998-4991-bb3e-1351b39ea5a6" xlink:to="loc_wkhs_PaymentsForBusinessAndCasualtyInsurance_f70e6b7d-06ad-47e7-9094-8cb72bf52f3f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_6d20cb15-43a0-4439-8146-19ea53965ac4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ba1c84ff-8998-4991-bb3e-1351b39ea5a6" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_6d20cb15-43a0-4439-8146-19ea53965ac4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_47913b67-52c6-44bc-a2a8-f73e2cd1fccf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ba1c84ff-8998-4991-bb3e-1351b39ea5a6" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_47913b67-52c6-44bc-a2a8-f73e2cd1fccf" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a3d9b839-37c2-41eb-9786-3fbb27bf58fa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ba1c84ff-8998-4991-bb3e-1351b39ea5a6" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a3d9b839-37c2-41eb-9786-3fbb27bf58fa" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f098a3cc-aa65-4c18-9b35-72d61a00934d" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a3d9b839-37c2-41eb-9786-3fbb27bf58fa" xlink:to="loc_dei_LegalEntityAxis_f098a3cc-aa65-4c18-9b35-72d61a00934d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f098a3cc-aa65-4c18-9b35-72d61a00934d_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f098a3cc-aa65-4c18-9b35-72d61a00934d" xlink:to="loc_dei_EntityDomain_f098a3cc-aa65-4c18-9b35-72d61a00934d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ccefa2e9-4267-4f23-8c77-e176eff9e59e" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f098a3cc-aa65-4c18-9b35-72d61a00934d" xlink:to="loc_dei_EntityDomain_ccefa2e9-4267-4f23-8c77-e176eff9e59e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AssuredPartnersLPMember_91ee53bd-1f47-4094-8b84-1b20e65b0d43" xlink:href="wkhs-20191231.xsd#wkhs_AssuredPartnersLPMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ccefa2e9-4267-4f23-8c77-e176eff9e59e" xlink:to="loc_wkhs_AssuredPartnersLPMember_91ee53bd-1f47-4094-8b84-1b20e65b0d43" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_5c366e92-bc3e-4c92-9c52-8a57786c9406" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a3d9b839-37c2-41eb-9786-3fbb27bf58fa" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_5c366e92-bc3e-4c92-9c52-8a57786c9406" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_5c366e92-bc3e-4c92-9c52-8a57786c9406_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_5c366e92-bc3e-4c92-9c52-8a57786c9406" xlink:to="loc_us-gaap_RelatedPartyDomain_5c366e92-bc3e-4c92-9c52-8a57786c9406_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_95d1d91c-4a06-44c5-9aa5-c8d62cdd4ac9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_5c366e92-bc3e-4c92-9c52-8a57786c9406" xlink:to="loc_us-gaap_RelatedPartyDomain_95d1d91c-4a06-44c5-9aa5-c8d62cdd4ac9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_LoanPartiesNotesMember_fa8e8aae-477a-4922-a395-946937becaa0" xlink:href="wkhs-20191231.xsd#wkhs_LoanPartiesNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_95d1d91c-4a06-44c5-9aa5-c8d62cdd4ac9" xlink:to="loc_wkhs_LoanPartiesNotesMember_fa8e8aae-477a-4922-a395-946937becaa0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_06692a2c-75a9-4e20-8395-0aafdb2cc2fe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_a3d9b839-37c2-41eb-9786-3fbb27bf58fa" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_06692a2c-75a9-4e20-8395-0aafdb2cc2fe" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_06692a2c-75a9-4e20-8395-0aafdb2cc2fe_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_06692a2c-75a9-4e20-8395-0aafdb2cc2fe" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_06692a2c-75a9-4e20-8395-0aafdb2cc2fe_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_98b0ee82-79be-4d8b-9965-52698e018989" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_06692a2c-75a9-4e20-8395-0aafdb2cc2fe" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_98b0ee82-79be-4d8b-9965-52698e018989" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_d8aef391-6c9f-4aff-b418-ddc8fa57e0eb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_98b0ee82-79be-4d8b-9965-52698e018989" xlink:to="loc_us-gaap_UnsecuredDebtMember_d8aef391-6c9f-4aff-b418-ddc8fa57e0eb" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/SubsequentEvents" xlink:type="simple" xlink:href="wkhs-20191231.xsd#SubsequentEvents"/>
<link:definitionLink xlink:role="http://workhorse.com/role/SubsequentEvents" xlink:type="extended" id="ifaaa0570fbfc4d3dafdfe0ba4d5f5e8e_7858fd67-8340-4fbb-990b-aaad1ef28783"/>
<link:roleRef roleURI="http://workhorse.com/role/OtherIncome" xlink:type="simple" xlink:href="wkhs-20191231.xsd#OtherIncome"/>
<link:definitionLink xlink:role="http://workhorse.com/role/OtherIncome" xlink:type="extended" id="i69ac3d6eae094542ad1f021ebd7c2c0f_feff3e15-c0bc-4a5a-8e37-8692e5c32a78"/>
<link:roleRef roleURI="http://workhorse.com/role/OtherIncomeTables" xlink:type="simple" xlink:href="wkhs-20191231.xsd#OtherIncomeTables"/>
<link:definitionLink xlink:role="http://workhorse.com/role/OtherIncomeTables" xlink:type="extended" id="i81e43d28c53b4b47ae09cdb7428a12a2_0373c83c-78c4-42d2-ac5d-a6603d1d2297"/>
<link:roleRef roleURI="http://workhorse.com/role/OtherIncomeDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#OtherIncomeDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/OtherIncomeDetails" xlink:type="extended" id="i5136a609274d47429fdd7a4044ef6b8c_e01976b2-3e1b-4280-b20f-d82e1ebdfb1b">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_07c5c5ab-821e-496e-8a92-a47db86e3e66" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_LicensingIncome_f9649983-ca87-4e3e-a530-b6db4a381e0b" xlink:href="wkhs-20191231.xsd#wkhs_LicensingIncome"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_07c5c5ab-821e-496e-8a92-a47db86e3e66" xlink:to="loc_wkhs_LicensingIncome_f9649983-ca87-4e3e-a530-b6db4a381e0b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_e29b6d52-6675-4aba-91d1-05877f1827a7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_07c5c5ab-821e-496e-8a92-a47db86e3e66" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_e29b6d52-6675-4aba-91d1-05877f1827a7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncome_1932529b-ffeb-4ae8-879d-121b6dee52e2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherIncome"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_07c5c5ab-821e-496e-8a92-a47db86e3e66" xlink:to="loc_us-gaap_OtherIncome_1932529b-ffeb-4ae8-879d-121b6dee52e2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_35c8c146-10bc-4fb1-8b20-10d99335d398" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_07c5c5ab-821e-496e-8a92-a47db86e3e66" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_35c8c146-10bc-4fb1-8b20-10d99335d398" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_0f72e150-7742-4d4d-a1e0-df42c243b0f0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_35c8c146-10bc-4fb1-8b20-10d99335d398" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_0f72e150-7742-4d4d-a1e0-df42c243b0f0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_0f72e150-7742-4d4d-a1e0-df42c243b0f0_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_0f72e150-7742-4d4d-a1e0-df42c243b0f0" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_0f72e150-7742-4d4d-a1e0-df42c243b0f0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_10b76664-7867-499a-a5ca-1beb3bef5a79" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_0f72e150-7742-4d4d-a1e0-df42c243b0f0" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_10b76664-7867-499a-a5ca-1beb3bef5a79" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_cd6abf39-eefa-4e8f-b05a-023dda2857bc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_10b76664-7867-499a-a5ca-1beb3bef5a79" xlink:to="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_cd6abf39-eefa-4e8f-b05a-023dda2857bc" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/OtherIncomeNarrativeDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#OtherIncomeNarrativeDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/OtherIncomeNarrativeDetails" xlink:type="extended" id="i0f7c43ea8eb14dfebff5af789495b24c_cbd198a2-dfb4-49b5-af8d-4c8059a3d845">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CollaborativeArrangementVehicleManufactureAgreementGrossVehicleWeight_3d5aa620-6979-4079-9797-909017ca3bf5" xlink:href="wkhs-20191231.xsd#wkhs_CollaborativeArrangementVehicleManufactureAgreementGrossVehicleWeight"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_CollaborativeArrangementVehicleManufactureAgreementGrossVehicleWeight_3d5aa620-6979-4079-9797-909017ca3bf5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_0dc71747-18e8-45b5-b033-c72dc4f5d7cd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_0dc71747-18e8-45b5-b033-c72dc4f5d7cd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_e13447c0-f666-4da1-bb36-55956ecf23b7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_e13447c0-f666-4da1-bb36-55956ecf23b7" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CollaborativeAgreementSubscriptionAgreementAntiDilutionRightsPeriod_b84633ac-95bb-4490-8cb7-217d6436321c" xlink:href="wkhs-20191231.xsd#wkhs_CollaborativeAgreementSubscriptionAgreementAntiDilutionRightsPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_CollaborativeAgreementSubscriptionAgreementAntiDilutionRightsPeriod_b84633ac-95bb-4490-8cb7-217d6436321c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CollaborativeAgreementVotingAgreementNumberOfDirectors_6f45799c-dbeb-40fc-9e47-c75ebec4d21e" xlink:href="wkhs-20191231.xsd#wkhs_CollaborativeAgreementVotingAgreementNumberOfDirectors"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_CollaborativeAgreementVotingAgreementNumberOfDirectors_6f45799c-dbeb-40fc-9e47-c75ebec4d21e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CollaborativeArrangementLicenseAgreementRoyaltyAdvanceOnDebtAndEquityCommitments_0adb7fbf-6ec3-4700-a22d-9cda1266b3ec" xlink:href="wkhs-20191231.xsd#wkhs_CollaborativeArrangementLicenseAgreementRoyaltyAdvanceOnDebtAndEquityCommitments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_CollaborativeArrangementLicenseAgreementRoyaltyAdvanceOnDebtAndEquityCommitments_0adb7fbf-6ec3-4700-a22d-9cda1266b3ec" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CollaborativeArrangementLicenseAgreementRoyaltyOnGrossSalesPrice_c2b109b6-42d7-4b53-a22c-f44cae64873f" xlink:href="wkhs-20191231.xsd#wkhs_CollaborativeArrangementLicenseAgreementRoyaltyOnGrossSalesPrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_CollaborativeArrangementLicenseAgreementRoyaltyOnGrossSalesPrice_c2b109b6-42d7-4b53-a22c-f44cae64873f" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CollaborativeArrangementVehicleManufacturingAgreementNumberOfVehiclesSold_a2a77401-68b9-4498-b458-8e19e5809739" xlink:href="wkhs-20191231.xsd#wkhs_CollaborativeArrangementVehicleManufacturingAgreementNumberOfVehiclesSold"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_CollaborativeArrangementVehicleManufacturingAgreementNumberOfVehiclesSold_a2a77401-68b9-4498-b458-8e19e5809739" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CollaborativeArrangementVehicleManufacturingAgreementExistingOrders_13987f82-96c0-46a7-a944-a3e6350293fd" xlink:href="wkhs-20191231.xsd#wkhs_CollaborativeArrangementVehicleManufacturingAgreementExistingOrders"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_CollaborativeArrangementVehicleManufacturingAgreementExistingOrders_13987f82-96c0-46a7-a944-a3e6350293fd" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_CollaborativeArrangementLicenseAgreementCommissionOnGrossSalesPrice_822d9035-6f0c-4ff9-b363-d9e12cbd51c2" xlink:href="wkhs-20191231.xsd#wkhs_CollaborativeArrangementLicenseAgreementCommissionOnGrossSalesPrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_CollaborativeArrangementLicenseAgreementCommissionOnGrossSalesPrice_822d9035-6f0c-4ff9-b363-d9e12cbd51c2" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_EquityMethodInvestmentFairValueOfOwnershipInterestReceived_a44dfc9e-d89b-46dc-8c39-c59688670e08" xlink:href="wkhs-20191231.xsd#wkhs_EquityMethodInvestmentFairValueOfOwnershipInterestReceived"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_EquityMethodInvestmentFairValueOfOwnershipInterestReceived_a44dfc9e-d89b-46dc-8c39-c59688670e08" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_b56cefd4-45b8-417c-8dd8-7d63eb0691ba" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_b56cefd4-45b8-417c-8dd8-7d63eb0691ba" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_DisposalGroupNotDiscontinuedOperationSellingCostsOnDisposal_b379814d-46cc-46b6-b0e0-5457bf06a385" xlink:href="wkhs-20191231.xsd#wkhs_DisposalGroupNotDiscontinuedOperationSellingCostsOnDisposal"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_wkhs_DisposalGroupNotDiscontinuedOperationSellingCostsOnDisposal_b379814d-46cc-46b6-b0e0-5457bf06a385" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_c6fe03cb-abca-4db2-90b8-307368774a42" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_c6fe03cb-abca-4db2-90b8-307368774a42" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_86bf7be2-2cd3-4f37-ad9e-03ac2e448c46" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_us-gaap_Revenues_86bf7be2-2cd3-4f37-ad9e-03ac2e448c46" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_3d29cb0b-00c7-4d15-a0f8-08bab86ee21a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpenses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_us-gaap_OperatingExpenses_3d29cb0b-00c7-4d15-a0f8-08bab86ee21a" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_c776c0d1-0406-4627-96f3-a35c9b5736b6" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_6d19a4d4-b879-44c8-b05a-5d31529eee1b" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_c776c0d1-0406-4627-96f3-a35c9b5736b6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_b6115a76-a880-4a57-a9de-509617465a4c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_c776c0d1-0406-4627-96f3-a35c9b5736b6" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_b6115a76-a880-4a57-a9de-509617465a4c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_b6115a76-a880-4a57-a9de-509617465a4c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_b6115a76-a880-4a57-a9de-509617465a4c" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_b6115a76-a880-4a57-a9de-509617465a4c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_12d8a952-e7c8-4b61-9810-c6f5562edf5b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_b6115a76-a880-4a57-a9de-509617465a4c" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_12d8a952-e7c8-4b61-9810-c6f5562edf5b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_5c34b54a-204a-48a6-89df-27c5b2b5af52" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_12d8a952-e7c8-4b61-9810-c6f5562edf5b" xlink:to="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_5c34b54a-204a-48a6-89df-27c5b2b5af52" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_bc522765-e215-466a-9eef-aa929940ecb0" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_c776c0d1-0406-4627-96f3-a35c9b5736b6" xlink:to="loc_srt_CounterpartyNameAxis_bc522765-e215-466a-9eef-aa929940ecb0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_bc522765-e215-466a-9eef-aa929940ecb0_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_bc522765-e215-466a-9eef-aa929940ecb0" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_bc522765-e215-466a-9eef-aa929940ecb0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_c2777df6-0023-4887-8a78-6b82e04075a8" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_bc522765-e215-466a-9eef-aa929940ecb0" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_c2777df6-0023-4887-8a78-6b82e04075a8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_LordstownMotorsCorpMember_bd0d0d0b-02fb-47eb-8c1e-29668d281a38" xlink:href="wkhs-20191231.xsd#wkhs_LordstownMotorsCorpMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_c2777df6-0023-4887-8a78-6b82e04075a8" xlink:to="loc_wkhs_LordstownMotorsCorpMember_bd0d0d0b-02fb-47eb-8c1e-29668d281a38" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfArrangementAxis_3abfd22c-ef69-4fad-836c-d8c0bbe6d474" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfArrangementAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_c776c0d1-0406-4627-96f3-a35c9b5736b6" xlink:to="loc_us-gaap_TypeOfArrangementAxis_3abfd22c-ef69-4fad-836c-d8c0bbe6d474" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_3abfd22c-ef69-4fad-836c-d8c0bbe6d474_default" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TypeOfArrangementAxis_3abfd22c-ef69-4fad-836c-d8c0bbe6d474" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_3abfd22c-ef69-4fad-836c-d8c0bbe6d474_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b096f0c9-da36-4546-a130-d504655efacc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TypeOfArrangementAxis_3abfd22c-ef69-4fad-836c-d8c0bbe6d474" xlink:to="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b096f0c9-da36-4546-a130-d504655efacc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollaborativeArrangementTransactionWithPartyToCollaborativeArrangementMember_818e00ab-9084-4f41-82cf-f1f125392a1b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CollaborativeArrangementTransactionWithPartyToCollaborativeArrangementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_b096f0c9-da36-4546-a130-d504655efacc" xlink:to="loc_us-gaap_CollaborativeArrangementTransactionWithPartyToCollaborativeArrangementMember_818e00ab-9084-4f41-82cf-f1f125392a1b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_24ee329f-f87d-4fb3-b53d-fd5ea13a04c8" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_c776c0d1-0406-4627-96f3-a35c9b5736b6" xlink:to="loc_srt_OwnershipAxis_24ee329f-f87d-4fb3-b53d-fd5ea13a04c8" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_24ee329f-f87d-4fb3-b53d-fd5ea13a04c8_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_24ee329f-f87d-4fb3-b53d-fd5ea13a04c8" xlink:to="loc_srt_OwnershipDomain_24ee329f-f87d-4fb3-b53d-fd5ea13a04c8_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_d54de6c9-a949-45c6-822f-3732beb10a3d" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_24ee329f-f87d-4fb3-b53d-fd5ea13a04c8" xlink:to="loc_srt_OwnershipDomain_d54de6c9-a949-45c6-822f-3732beb10a3d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_StrategicPartnerMember_e839a6ca-cec5-4fe6-be63-0cf9cf3e498f" xlink:href="wkhs-20191231.xsd#wkhs_StrategicPartnerMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_d54de6c9-a949-45c6-822f-3732beb10a3d" xlink:to="loc_wkhs_StrategicPartnerMember_e839a6ca-cec5-4fe6-be63-0cf9cf3e498f" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://workhorse.com/role/OtherTransaction" xlink:type="simple" xlink:href="wkhs-20191231.xsd#OtherTransaction"/>
<link:definitionLink xlink:role="http://workhorse.com/role/OtherTransaction" xlink:type="extended" id="idbe2c03733af4182b325b016cd63a196_7f977b71-abd9-429e-badb-7524e5c1680f"/>
<link:roleRef roleURI="http://workhorse.com/role/OtherTransactionDetails" xlink:type="simple" xlink:href="wkhs-20191231.xsd#OtherTransactionDetails"/>
<link:definitionLink xlink:role="http://workhorse.com/role/OtherTransactionDetails" xlink:type="extended" id="id29591914c3b480a832d59bc1ac33062_61eac992-8d5a-4647-8883-5a1c91c7c7c1">
<link:loc xlink:type="locator" xlink:label="loc_wkhs_OtherTransactionsLineItems_4cb1741c-5884-45d0-8a5b-3b534c2095df" xlink:href="wkhs-20191231.xsd#wkhs_OtherTransactionsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AssetAcquisitionCashDepositedIntoEscrowAccount_b591ba3b-93ef-4916-ace3-8f21ded290c1" xlink:href="wkhs-20191231.xsd#wkhs_AssetAcquisitionCashDepositedIntoEscrowAccount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_OtherTransactionsLineItems_4cb1741c-5884-45d0-8a5b-3b534c2095df" xlink:to="loc_wkhs_AssetAcquisitionCashDepositedIntoEscrowAccount_b591ba3b-93ef-4916-ace3-8f21ded290c1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AssetAcquisitionCommonStockSharesHeldInEscrowAccountValue_27e897b8-226f-4839-b5fe-8e33adb37ccf" xlink:href="wkhs-20191231.xsd#wkhs_AssetAcquisitionCommonStockSharesHeldInEscrowAccountValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_OtherTransactionsLineItems_4cb1741c-5884-45d0-8a5b-3b534c2095df" xlink:to="loc_wkhs_AssetAcquisitionCommonStockSharesHeldInEscrowAccountValue_27e897b8-226f-4839-b5fe-8e33adb37ccf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AssetAcquisitionPaymentsForAcquiredAssetsCash_ea4269f2-1350-4109-959e-d4780e87e0e9" xlink:href="wkhs-20191231.xsd#wkhs_AssetAcquisitionPaymentsForAcquiredAssetsCash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_OtherTransactionsLineItems_4cb1741c-5884-45d0-8a5b-3b534c2095df" xlink:to="loc_wkhs_AssetAcquisitionPaymentsForAcquiredAssetsCash_ea4269f2-1350-4109-959e-d4780e87e0e9" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AssetAcquisitionPaymentsForAssetsAcquiredLiabilitiesPayable_31fc7f60-01b2-4684-8e09-a22bf2626889" xlink:href="wkhs-20191231.xsd#wkhs_AssetAcquisitionPaymentsForAssetsAcquiredLiabilitiesPayable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_OtherTransactionsLineItems_4cb1741c-5884-45d0-8a5b-3b534c2095df" xlink:to="loc_wkhs_AssetAcquisitionPaymentsForAssetsAcquiredLiabilitiesPayable_31fc7f60-01b2-4684-8e09-a22bf2626889" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AssetAcquisitionProductionPaymentPayablePeriod_43172433-d52f-4d3d-b784-7ebbacd24ab5" xlink:href="wkhs-20191231.xsd#wkhs_AssetAcquisitionProductionPaymentPayablePeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_OtherTransactionsLineItems_4cb1741c-5884-45d0-8a5b-3b534c2095df" xlink:to="loc_wkhs_AssetAcquisitionProductionPaymentPayablePeriod_43172433-d52f-4d3d-b784-7ebbacd24ab5" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_OtherTransactionsTable_3b22b55a-93b3-428f-8a99-043d68d188af" xlink:href="wkhs-20191231.xsd#wkhs_OtherTransactionsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_wkhs_OtherTransactionsLineItems_4cb1741c-5884-45d0-8a5b-3b534c2095df" xlink:to="loc_wkhs_OtherTransactionsTable_3b22b55a-93b3-428f-8a99-043d68d188af" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AssetAcquisitionAxis_a524fccb-b256-4485-958f-9286ebb8896a" xlink:href="wkhs-20191231.xsd#wkhs_AssetAcquisitionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_wkhs_OtherTransactionsTable_3b22b55a-93b3-428f-8a99-043d68d188af" xlink:to="loc_wkhs_AssetAcquisitionAxis_a524fccb-b256-4485-958f-9286ebb8896a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AssetAcquisitionDomain_a524fccb-b256-4485-958f-9286ebb8896a_default" xlink:href="wkhs-20191231.xsd#wkhs_AssetAcquisitionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_wkhs_AssetAcquisitionAxis_a524fccb-b256-4485-958f-9286ebb8896a" xlink:to="loc_wkhs_AssetAcquisitionDomain_a524fccb-b256-4485-958f-9286ebb8896a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_AssetAcquisitionDomain_9375b408-890b-4dcb-a9b4-5f2d95329138" xlink:href="wkhs-20191231.xsd#wkhs_AssetAcquisitionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_wkhs_AssetAcquisitionAxis_a524fccb-b256-4485-958f-9286ebb8896a" xlink:to="loc_wkhs_AssetAcquisitionDomain_9375b408-890b-4dcb-a9b4-5f2d95329138" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_STEngineeringHackneyIncMember_c68941c9-51ff-44ec-b3aa-4ee2c0e0391c" xlink:href="wkhs-20191231.xsd#wkhs_STEngineeringHackneyIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_AssetAcquisitionDomain_9375b408-890b-4dcb-a9b4-5f2d95329138" xlink:to="loc_wkhs_STEngineeringHackneyIncMember_c68941c9-51ff-44ec-b3aa-4ee2c0e0391c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_PayableEventAxis_132416fb-ac4d-43f5-ba19-e8b5fa1e455f" xlink:href="wkhs-20191231.xsd#wkhs_PayableEventAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_wkhs_OtherTransactionsTable_3b22b55a-93b3-428f-8a99-043d68d188af" xlink:to="loc_wkhs_PayableEventAxis_132416fb-ac4d-43f5-ba19-e8b5fa1e455f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_PayableEventDomain_132416fb-ac4d-43f5-ba19-e8b5fa1e455f_default" xlink:href="wkhs-20191231.xsd#wkhs_PayableEventDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_wkhs_PayableEventAxis_132416fb-ac4d-43f5-ba19-e8b5fa1e455f" xlink:to="loc_wkhs_PayableEventDomain_132416fb-ac4d-43f5-ba19-e8b5fa1e455f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_PayableEventDomain_a0571f4e-5478-41ab-8357-211f0752c718" xlink:href="wkhs-20191231.xsd#wkhs_PayableEventDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_wkhs_PayableEventAxis_132416fb-ac4d-43f5-ba19-e8b5fa1e455f" xlink:to="loc_wkhs_PayableEventDomain_a0571f4e-5478-41ab-8357-211f0752c718" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_FirstPaymentMember_57f07f24-5348-47a8-a361-4fa1818ab929" xlink:href="wkhs-20191231.xsd#wkhs_FirstPaymentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_PayableEventDomain_a0571f4e-5478-41ab-8357-211f0752c718" xlink:to="loc_wkhs_FirstPaymentMember_57f07f24-5348-47a8-a361-4fa1818ab929" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_wkhs_SecondPaymentMember_cc516797-9340-4bb0-8cfc-9f34a732a1bb" xlink:href="wkhs-20191231.xsd#wkhs_SecondPaymentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_wkhs_PayableEventDomain_a0571f4e-5478-41ab-8357-211f0752c718" xlink:to="loc_wkhs_SecondPaymentMember_cc516797-9340-4bb0-8cfc-9f34a732a1bb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_5c0c7d6f-cf39-452d-be8a-15da8d278e64" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_wkhs_OtherTransactionsTable_3b22b55a-93b3-428f-8a99-043d68d188af" xlink:to="loc_srt_RangeAxis_5c0c7d6f-cf39-452d-be8a-15da8d278e64" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5c0c7d6f-cf39-452d-be8a-15da8d278e64_default" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_5c0c7d6f-cf39-452d-be8a-15da8d278e64" xlink:to="loc_srt_RangeMember_5c0c7d6f-cf39-452d-be8a-15da8d278e64_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_762effd8-838e-40d4-8d44-106acd0314de" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_5c0c7d6f-cf39-452d-be8a-15da8d278e64" xlink:to="loc_srt_RangeMember_762effd8-838e-40d4-8d44-106acd0314de" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_41241bd5-6164-48f5-b96a-c2296531dace" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_762effd8-838e-40d4-8d44-106acd0314de" xlink:to="loc_srt_MinimumMember_41241bd5-6164-48f5-b96a-c2296531dace" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d2aaa639-35fd-4202-aa3e-51c50dfdf881" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_762effd8-838e-40d4-8d44-106acd0314de" xlink:to="loc_srt_MaximumMember_d2aaa639-35fd-4202-aa3e-51c50dfdf881" xlink:type="arc" order="1"/>
</link:definitionLink>
</link:linkbase>


20 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 3/12/24  Workhorse Group Inc.              10-K       12/31/23   96:8.3M
 3/01/23  Workhorse Group Inc.              10-K       12/31/22  103:9.6M
 3/21/22  Lordstown Motors Corp.            POS AM      3/18/22   56:8M                                     Toppan Merrill/FA
 3/21/22  Lordstown Motors Corp.            POS AM      3/18/22   56:9.3M                                   Toppan Merrill/FA
 3/10/22  Workhorse Group Inc.              424B5                  1:237K                                   EdgarAgents LLC/FA
 3/01/22  Lordstown Motors Corp.            424B3                  1:1.5M                                   Toppan Merrill/FA
 3/01/22  Lordstown Motors Corp.            424B3                  1:1.3M                                   Toppan Merrill/FA
 3/01/22  Workhorse Group Inc.              10-K       12/31/21   99:9M
 2/28/22  Lordstown Motors Corp.            10-K       12/31/21   63:7M                                     Toppan Merrill Bridge/FA
 7/30/21  Lordstown Motors Corp.            S-1                   89:7.2M                                   Toppan Merrill/FA
 7/15/21  Lordstown Motors Corp.            POS AM                 3:2.9M                                   Toppan Merrill/FA
 6/10/21  Lordstown Motors Corp.            POS AM                88:8.2M                                   Toppan Merrill/FA
 6/08/21  Lordstown Motors Corp.            10-K/A     12/31/20   66:5.9M                                   Toppan Merrill Bridge/FA
 3/25/21  Lordstown Motors Corp.            10-K       12/31/20   64:5.2M                                   Toppan Merrill Bridge/FA
 3/01/21  Workhorse Group Inc.              10-K       12/31/20   84:8M                                     Workiva Inc Wde… FA01/FA
12/01/20  Lordstown Motors Corp.            S-1/A                 69:7.7M                                   Toppan Merrill/FA
11/12/20  Lordstown Motors Corp.            S-1                   72:7.4M                                   Toppan Merrill/FA
10/29/20  Lordstown Motors Corp.            8-K/A:3,5,910/23/20   18:2M                                     Toppan Merrill/FA
10/29/20  Lordstown Motors Corp.            8-K:1,2,3,410/23/20   18:2.2M                                   Toppan Merrill/FA
10/28/20  Workhorse Group Inc.              S-3                    3:283K                                   EdgarAgents LLC/FA
Top
Filing Submission 0001628280-20-003532   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Fri., Mar. 29, 6:06:53.2am ET