v3.25.2
Organization and business (Details)
Jun. 30, 2025
Dec. 31, 2024
Mar. 31, 2024
Jun. 30, 2023
Mar. 31, 2019
Aug. 31, 2018
Shashi Jiulong Power Steering Gears Co., Ltd., "Jiulong"            
Organization and business            
Percentage Interest 100.00% 100.00%        
Jingzhou Henglong Automotive Parts Co., Ltd., "Henglong"            
Organization and business            
Percentage Interest 100.00% 100.00%        
Shenyang Jinbei Henglong Automotive Steering System Co., Ltd., "Shenyang"            
Organization and business            
Percentage Interest 70.00% 70.00%        
Wuhan Jielong Electric Power Steering Co., Ltd., "Jielong"            
Organization and business            
Percentage Interest 85.00% 85.00%        
Wuhu Henglong Automotive Steering System Co., Ltd., "Wuhu"            
Organization and business            
Percentage Interest 100.00% 100.00%        
Hubei Henglong Automotive System Group Co., Ltd., "Hubei Henglong"            
Organization and business            
Percentage Interest 100.00% 100.00%        
Jingzhou Henglong Automotive Technology (Testing) Center, "Testing Center"            
Organization and business            
Percentage Interest   100.00%        
Chongqing Henglong Hongyan Automotive System Co., Ltd., "Chongqing Henglong"            
Organization and business            
Percentage Interest 70.00% 70.00%        
CAAS Brazil's Imports and Trade In Automotive Parts Ltd., "Brazil Henglong"            
Organization and business            
Percentage Interest 94.19% 95.84%        
Wuhan Chuguanjie Automotive Science and Technology Ltd., "Wuhan Chuguanjie"            
Organization and business            
Percentage Interest 85.00% 85.00%        
Hubei Henglong Group Shanghai Automotive Electronics Research and Development Ltd., "Shanghai Henglong"            
Organization and business            
Percentage Interest 100.00% 100.00%        
Hubei Henglong & KYB Automobile Electric Steering System Co., Ltd., "Henglong KYB"            
Organization and business            
Percentage Interest 60.00% 66.60% 6.60%     66.60%
Hyoseong (Wuhan) Motion Mechatronics System Co., Ltd., "Wuhan Hyoseong"            
Organization and business            
Percentage Interest 51.00% 51.00%     51.00%  
Wuhu Hongrun New Material Co., Ltd., "Wuhu Hongrun"            
Organization and business            
Percentage Interest 62.00% 62.00%        
Changchun Hualong Automotive Technology Co., Ltd., "Changchun Hualong"            
Organization and business            
Percentage Interest 100.00% 100.00%        
Hubei Zhirong Automobile Technology Co., Ltd., "Zhirong"            
Organization and business            
Percentage Interest 100.00% 100.00%   100.00%    
CAAS EUROPE S.r.l., "CAAS EUROPE"            
Organization and business            
Percentage Interest 100.00% 100.00%        
China Automotive Systems Holdings, Inc., "CAAS Cayman"            
Organization and business            
Percentage Interest 100.00%