General Motors expressed support for a Trump administration proposal announced on December 4, 2025, that would weaken vehicle mileage rules through the 2031 model year. The plan aims to lower the required fleetwide average fuel economy, a move the administration says will make a wider range of gasoline vehicles more affordable for consumers. In a statement, GM said it "supports the goals" of the proposed rule and remains committed to offering a broad portfolio of both electric and gasoline-powered vehicles. The announcement was made at a White House event, which GM's CEO Mary Barra did not attend, citing a previously scheduled engagement. The company was represented by a plant manager instead. This regulatory shift comes as GM, like other major automakers, has been investing billions of dollars into the development and production of electric vehicles to meet stricter environmental standards. The proposed rule could alter the long-term strategic and financial landscape for vehicle manufacturing in the U.S.