v3.25.2
Organization and Nature of Operations - Subsidiaries (Details)
Jun. 30, 2025
Dec. 31, 2024
Nio Nextev Limited ("NIO HK") (formerly known as Nextev Limited)    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO GmbH (formerly known as NextEV GmbH)    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO Co., Ltd. ("NIO SH") (formerly known as NextEV Co., Ltd.)    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO USA, Inc. ("NIO US") (formerly known as NextEV USA, Inc.)    
Organization and Nature of Operations    
Equity interest held 100.00%  
XPT Limited ("XPT")    
Organization and Nature of Operations    
Equity interest held 100.00%  
XPT (Jiangsu) Investment Co., Ltd. ("XPT Jiangsu")    
Organization and Nature of Operations    
Equity interest held 100.00%  
Shanghai XPT Technology Limited    
Organization and Nature of Operations    
Equity interest held 100.00%  
XPT (Nanjing) E-Powertrain Technology Co., Ltd. ("XPT NJEP")    
Organization and Nature of Operations    
Equity interest held 100.00%  
XPT (Nanjing) Energy Storage System Co., Ltd. ("XPT NJES")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO Power Express Limited ("PE HK)    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO User Enterprise Limited ("UE HK")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO Sales and Services Co., Ltd. ("UE CNHC") (formerly known as Shanghai NIO Sales and Service Co., Ltd. )    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO Energy Investment (Hubei) Co., Ltd. ("PE CNHC")    
Organization and Nature of Operations    
Equity interest held 100.00%  
Wuhan NIO Energy Co., Ltd. ("PE WHJV")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO Holding Co., Ltd. ("NIO China") (formerly known as NIO (Anhui) Holding Co., Ltd.) (Note (a))    
Organization and Nature of Operations    
Equity interest held 100.00% 100.00%
XPT (Jiangsu) Automotive Technology Co., Ltd. ("XPT Auto")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO Financial Leasing Co., Ltd. ("NIO Leasing")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO (Anhui) Co., Ltd. ("NIO AH")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO Technology (Anhui) Co., Ltd. ("NIO R&D")    
Organization and Nature of Operations    
Equity interest held 100.00%  
New Horizon B.V.    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO Nextev Europe Holding B.V.("NIO NL")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NEU Battery Asset Co., Ltd. ("BAC Cayman")    
Organization and Nature of Operations    
Equity interest held 100.00%  
Instant Power Europe B.V. Co., Ltd. ("BAC NL")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NEU Battery Asset (Hong Kong) Co., Ltd. ("BAC HK")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO Software Technology (Shanghai) Co., Ltd ("SHST")    
Organization and Nature of Operations    
Equity interest held 100.00%  
NIO AI Technology Limited ("NIO AI Technology")    
Organization and Nature of Operations    
Equity interest held 96.97%  
NIO AI Technology Limited Hong Kong    
Organization and Nature of Operations    
Equity interest held 96.97%  
Anhui NIO Autonomous Driving Technology Co., Ltd. ("Anhui NIO AD")    
Organization and Nature of Operations    
Equity interest held 96.97%