[CHINA AUTOMOTIVE SYSTEMS, INC. INDEX Page Part I — Financial Information Item 1. Financial Statements. 4 Condensed Consolidated Statements of Income for the Three Months and Six Months Ended June 30, 2011 and 2010 (Unaudited) 5 Condensed Consolidated Statements of Comprehensive Income for the Three Months and Six Months Ended June 30, 2011 and 2010 (Unaudited) 6 Condensed Consolidated Balance] [I, Qizhou Wu, certify that: 1. I have reviewed this quarterly report on Form 10-Q of China Automotive Systems, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were] [I, Jie Li, certify that: 1. I have reviewed this quarterly report on Form 10-Q of China Automotive Systems, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were] [18 U.S.C. SECTION 1350, OF THE SARBANES-OXLEY ACT OF 2002 (1) (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Qizhou Wu Chief Executive Officer] [18 U.S.C. SECTION 1350, OF THE SARBANES-OXLEY ACT OF 2002 (1) (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Jie Li Chief Financial Officer]

[CHINA AUTOMOTIVE SYSTEMS, INC. INDEX Page Part I — Financial Information Item 1. Financial Statements. 4 Condensed Consolidated Statements of Income (Loss) for the Three Months Ended March 31, 2011 and 2010 (Unaudited) 4 Condensed Consolidated Statements of Comprehensive Income (Loss) for the Three Months Ended March 31, 2011 and 2010 (Unaudited) 5 Condensed Consolidated Balance Sheets at March 31,] [I, Qizhou Wu, certify that: 1. I have reviewed this quarterly report on Form 10-Q of China Automotive Systems, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were] [I, Jie Li, certify that: 1. I have reviewed this quarterly report on Form 10-Q of China Automotive Systems, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were] [18 U.S.C. SECTION 1350, OF THE SARBANES-OXLEY ACT OF 2002 (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Qizhou Wu Chief Executive Officer EX-32.1 4 v229297_ex32-1.htm SECTION 1350 CERTIFICATION] [18 U.S.C. SECTION 1350, OF THE SARBANES-OXLEY ACT OF 2002 (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Jie Li Chief Financial Officer EX-32.2 5 v229297_ex32-2.htm SECTION 1350 CERTIFICATION]