UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

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

OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of November 2025

Commission File Number: 001-41782

VinFast Auto Ltd.

Dinh Vu – Cat Hai Economic Zone

Cat Hai Island, Cat Hai Special Zone

Hai Phong City, Vietnam

(Address of principal executive office)

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

Form 20-F ☒ Form 40-F ☐

INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K

VINFAST REPORTS RECORD DELIVERIES OF OVER 20,000 ELECTRIC VEHICLES IN OCTOBER 2025 IN VIETNAM

Hanoi, November 12, 2025 – VinFast Auto Ltd. (“VinFast” or the “Company”) announced its preliminary domestic Vietnam deliveries of 20,380 electric vehicles (“EVs”)¹ in October 2025. This milestone marks the first time an automaker in Vietnam has delivered more than 20,000 vehicles¹ in a single month, underscoring VinFast’s leadership in the market². Cumulatively, during the first ten months of 2025, the Company delivered a total of 124,264 EVs¹ to customers in Vietnam.

Notably, 4,619 VF 3 vehicles¹ were delivered in October 2025, making it VinFast’s best-selling model for the month. The VF 5 ranked second, with 4,450 vehicles¹ delivered. The Limo Green ranked third with 4,160 vehicles¹ delivered, followed by the Herio Green with 2,920 vehicles¹, the VF 6 with 2,524 vehicles¹ and the VF 7 with 1,190 vehicles¹.

For the first ten months of 2025, the VF 3 and the VF 5 were VinFast’s two best-selling models in Vietnam with cumulative deliveries of 36,005 and 35,406 vehicles¹, respectively. The Company also delivered 16,949 VF 6 vehicles¹, 11,524 Herio Green vehicles¹, 7,067 VF 7 vehicles¹, 6,504 Limo Green vehicles¹ and 1,477 VF 9 vehicles¹ during the period.

VinFast expects to begin deliveries of the EC Van and Minio Green models by the end of 2025.

This Form 6-K shall be deemed to be incorporated by reference into the Company’s registration statement on Form S-8 (File No. 333-278251), registration statement on Form F-3 (File No. 333-275133), and registration statement on Form F-3 (File No. 333- 291445) (including any prospectuses forming a part of such registration statements) and to be a part thereof from the date on which this report is furnished, to the extent not superseded by documents or reports subsequently filed or furnished.

Note 1: Preliminary delivery results are subject to change and may differ from the final number of deliveries that will be recognized as vehicle sales revenue for the period as a result of the year end audit.

Note 2: Market and industry statements in this document are based on data from the Vietnam Automobile Manufacturers’ Association and Company internal data (for VinFast only).

About VinFast

VinFast (NASDAQ: VFS) – a subsidiary of Vingroup JSC – is Vietnam’s leading automotive manufacturer, committed to its mission of creating a green future for everyone. VinFast produces a range of electric SUVs, e-scooters, e-bikes, and e-buses in Vietnam and exports to key markets across Asia, North America, and Europe. Learn more at www.vinfastauto.us.

VinFast deliveries represent only one measure of the Company’s financial performance and should not be relied on as an indicator of quarterly financial results, which depend on a variety of factors, including the average selling price and various cost components.

Forward Looking Statements

Forward-looking statements contained herein, which are not historical facts, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1955. These statements include statements regarding VinFast’s future results of operations and financial position, planned products and services, business strategy and plans, objectives of management for future operations of VinFast, market size and growth opportunities, competitive position and technological and market trends and involve known and unknown risks that are difficult to predict. As a result, VinFast’s actual results, performance or achievements may differ materially from those expressed or implied by these forward-looking statements. In some cases, you can identify forward-looking statements because they contain words such as “may,” “will,” “shall,” “should,” “expects,” “plans,” “anticipates,” “could,” “intends,” “target,” “projects,” “contemplates,” “believes,” “estimates,” “predicts,” “potential,” “goal,” “objective,” “seeks,” or “continue” or the negative of these words or other similar terms or expressions that concern VinFast’s expectations, strategy, plans, or intentions. Such forward-looking statements are necessarily based upon estimates and assumptions that, while considered reasonable by VinFast’s and VinFast’s management, are inherently uncertain. Factors that may cause actual results to differ materially from current expectations include, but are not limited to: (i) the risk associated with being a growth-stage company in the EV industry; (ii) the unavailability, reduction or elimination of government and economic incentives or government policies that are favorable for EV manufacturers and buyers; (iii) Significant changes or developments in U.S. laws or policies, including changes in U.S. trade policies and tariffs and the reaction of other countries; (iv) the Company’s ability to adequately control the costs associated with its operations; (v) the risks of the Company’s brand, reputation, public credibility, and consumer confidence in its business being harmed by negative publicity; (vi) competition in the automotive industry; (vii) the ability of the Company to obtain components and raw materials according to schedule at acceptable prices, quality, and volumes from its suppliers; (viii) the demand for, and consumers’ willingness to adopt, EVs; (ix) the availability and accessibility of EV charging stations or related infrastructure; (x) failure to remediate the Company’s material weaknesses and produce timely and accurate financial statements; (xi) the ability of the Company to achieve profitability, positive cash flows from operating activities, and a net working capital surplus; (xii) the Company’s ability to obtain commercially reasonable capital to support its business growth; (xiii) the risk of future restatements to the Company’s Financial Statements; (xiv) the Company’s reliance on financial and other support from Vingroup and its affiliates and the close association between the Company and Vingroup and its affiliates; (xv) the Company’s reliance on its affiliates for its EV deliveries; (xvi) the ability of the Company’s controlling shareholder to control and exert significant influence on the Company; and (xvii) other risks discussed in VinFast’s reports filed or furnished to the SEC.

All forward-looking statements attributable to VinFast’s or people acting on VinFast’s behalf are expressly qualified in their entirety by the cautionary statements set forth above. You are cautioned not to place undue reliance on any forward-looking statements, which are made only as of the date hereof. VinFast does not undertake or assume any obligation to update publicly any of these forward-looking statements to reflect actual results, new information or future events, changes in assumptions, or changes in other factors affecting forward-looking statements, except to the extent required by applicable law. If VinFast updates one or more forward-looking statements, no inference should be drawn that it will make additional updates with respect to those or other forward-looking statements. The inclusion of any statement herein does not constitute an admission by VinFast or any other person that the events or circumstances described in such statement are material. Undue reliance should not be placed upon the forward-looking statements.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	VinFast Auto Ltd.

Date: November 12, 2025	By:	/s/ Le Thi Thu Thuy
		Name:	Le Thi Thu Thuy
		Title:	Chairwoman and Director

VinFast Auto Ltd. 6-K