The Trump administration lowered fuel-economy standards for 2031 vehicles to 34.9 mpg from Biden's 50.4 mpg requirement, enabling larger gas-guzzling vehicles. Experts warn this will increase fuel costs and pollution while complicating California's climate goals, though automakers and oil interests welcome the looser rules. California and environmental groups are expected to challenge the change in court.
The Trump Administration finalized a rule weakening fuel efficiency standards for US vehicles, requiring 34.9 miles per gallon by model year 2031 instead of the Biden-era target of 50.4 mpg. The administration claims the move will reduce vehicle costs by $1,300, but consumer advocacy, health, and environmental groups argue it will increase fuel costs and air pollution damages for Americans.