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Document and Entity Information
 12 Months Ended
Dec. 31, 2023
shares
Document Entity Information  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2023
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-41576
Entity Registrant Name ECARX Holdings Inc.
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 5/F, Building 1, Zhongteng Building
Entity Address, Address Line Two 2121 Longteng Avenue
Entity Address, City or Town Xuhui District, Shanghai
Entity Address, Postal Zip Code 200232
Entity Address, Country CN
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Accelerated Filer
Entity Emerging Growth Company true
Entity Ex Transition Period false
Document Financial Statement Error Correction [Flag] false
ICFR Auditor Attestation Flag false
Document Accounting Standard U.S. GAAP
Entity Shell Company false
Entity Central Index Key 0001861974
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2023
Document Fiscal Period Focus FY
Amendment Flag false
Auditor Name KPMG Huazhen LLP
Auditor Location Shanghai, China
Auditor Firm ID 1186
Class A Ordinary Shares  
Document Entity Information  
Title of 12(b) Security Class A ordinary shares, par value $0.000005 per share
Trading Symbol ECX
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 288,989,049
Class B Ordinary Shares  
Document Entity Information  
Entity Common Stock, Shares Outstanding 48,960,916
Warrants  
Document Entity Information  
Title of 12(b) Security Warrants
Trading Symbol ECXWW
Security Exchange Name NASDAQ
Business Contact  
Document Entity Information  
Contact Personnel Name Jing (Phil) Zhou,
Contact Personnel Email Address phil.zhou@ecarxgroup.com
Entity Address, Address Line One 5/F, Building 1, Zhongteng Building
Entity Address, Address Line Two 2121 Longteng Avenue
Entity Address, City or Town Xuhui District, Shanghai
Entity Address, Postal Zip Code 200232
Entity Address, Country CN