Biden administration proposes new fuel economy standards, with higher bar for trucks. July 28, 2023 5:59 PM ET. Camila Domonoske Enlarge this image. A truck driver points to his fuel gauge in 2008.

Federal highway regulators have proposed new fuel economy standards that would require cars to improve their fuel economy by 2% every year, and light trucks by 4% each year, through 2032.