Trump pledges to replace Biden-era US fuel economy rules
The president says the change will lower car prices, but has yet to provide details of the new standards.
US President Donald Trump says he will replace fuel economy standards adopted under Joe Biden, describing the change as ending what he calls an “EV mandate”. The announcement came in a social media post on Saturday.
Trump said the new rules would lower vehicle prices and help manufacturers expand production in the United States. The supplied report does not establish that prices will fall, and Trump has not outlined the standards or their targets.
The rules at issue are Corporate Average Fuel Economy standards, which set average targets across the cars and light trucks sold by automakers. They do not require people to buy electric vehicles or prohibit petrol-powered cars.
Standards finalised by the Biden administration in 2024 scheduled average fuel economy to rise from 39.1 miles per gallon to about 50.4 by 2031. Automakers have increased electric vehicle production to help meet those requirements.
Transportation Secretary Sean Duffy said an announcement was expected on Monday. Trump proposed a separate target of roughly 34.5 miles per gallon for 2031 in December 2025; the report does not confirm that figure as part of the current announcement.
