Exhibit 99.1 VinFast Reports Unaudited Second Quarter 2025 Financial Results Quarterly Revenues reached VND16,609.3 billion (US$663.0 million) Quarterly EV Deliveries were 35,837 units Singapore, September 4, 2025 – VinFast Auto Ltd. ("VinFast" or the "Company") (Nasdaq: VFS), a pure-play electric vehicle ("EV") manufacturer with the mission of making EVs accessible to everyone, today announced its unaudited financial results for the second quarter ended June 30, 2025. Operating Highlights for the Second Qu ...