Company: CAAS
Filing Date: 2025-09-18
Form Type: 6-K
Source: 0001104659-25-091003
Chunk: 0

Company: China Automotive Systems, Inc.
Filing Date: 2025-09-18
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of September, 2025

Commission File Number: 001-42851

China Automotive Systems, Inc.

(Exact Name of Registrant as Specified in
its Charter)</div>

| No. 1 Henglong Road, Yu Qiao Development Zone   |
| Shashi District, Jing Zhou City, Hubei Province |
| The People’s Republic of China                  |

<div align='center'>(Address of principal executive offices)</div>

Indicate by check mark whether the registrant files or will file annual
reports under cover of Form 20-F or Form 40-F:

<div align='center'>Form 20-F x
Form 40-F ¨</div>

The Audit Committee (the “Committee”) of the Board of Directors of China Automotive Systems, Inc. (the “Company”) recently conducted a selection process to determine the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025. Upon completion of this process, the Committee approved (i) the dismissal of PricewaterhouseCoopers Zhong Tian LLP (“PwC”), effective September 17, 2025, and (ii) the engagement of Grant Thornton Zhitong Certified Public Accountants LLP (“Grant Thornton”), effective September 17, 2025 to serve as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025.

The audit reports of PwC on the consolidated financial statements of the Company for the fiscal years ended December 31, 2023 and December 31, 2024, did not contain an adverse opinion or a disclaimer of opinion, nor were they qualified or modified as to uncertainty, audit scope, or accounting principles.

During the fiscal years ended December 31, 2023 and December 31, 2024, and the subsequent interim period through September 17, 2025, there were no: (i) “disagreements” (within the meaning of Item 16F(a)(1)(iv) of Form 20-F and related instructions) between the Company and PwC on any matter of accounting principles or practices