This bill, titled the "Preserving Choice in Vehicle Purchases Act of 2025," amends Section 209(b) of the Clean Air Act to restrict state authority over vehicle emissions. Its primary purpose is to prevent states from implementing standards that would directly or indirectly limit the sale or use of new motor vehicles equipped with internal combustion engines. The legislation adds a new condition to the Clean Air Act, stating that the Administrator may not grant waivers for state standards that restrict the availability of gasoline-powered vehicles. It also clarifies that waivers granted before the bill's enactment cannot cover state standards amended afterward if those amendments limit internal combustion engine vehicles. Furthermore, the bill mandates the revocation of any waivers granted by the Environmental Protection Agency between January 1, 2022, and the bill's enactment date if they are found to violate this new prohibition on limiting internal combustion engine vehicle sales.