President Donald Trump announced Saturday that he has approved new fuel economy standards rolling back Biden-era vehicle efficiency requirements, a move he said would lower car prices and give automakers more flexibility to build the vehicles Americans want most. The administration had not released the final rule or detailed the new requirements as of Saturday.
A prior proposal from the National Highway Traffic Safety Administration would set the fleetwide fuel-economy target for cars and light trucks at roughly 34.5 miles per gallon by model year 2031. That figure is a steep cut from the 50.4 mpg standard established under the Biden administration.
Lower Prices Versus Higher Fuel Costs
Trump said the change would save families thousands of dollars on new vehicles and support expanded U.S. manufacturing. NHTSA previously estimated its proposed rollback could reduce the average upfront price of a new vehicle by about $930.
But the same proposal carried significant projected downsides. According to fuel economy standards rollback, the NHTSA proposal was projected to increase fuel consumption by roughly 100 billion gallons through 2050, add about $185 billion in fuel costs and raise carbon dioxide emissions by about 5%.
Environmental groups pushed back hard on the decision, arguing that less fuel-efficient vehicles translate directly into higher costs at the gas pump and more pollution over time. The Biden-era rules, which did not require consumers to purchase electric vehicles, were designed to cut fuel use and emissions while nudging automakers toward hybrids and EVs.
Automakers and SUV Makers Stand to Gain
The rollback is expected to give manufacturers more room to produce gasoline-powered pickups and SUVs, vehicles that typically carry lower fuel efficiency but generate higher profit margins. Those segments represent some of the best-selling and most profitable products in the American auto market.
Transportation Secretary Sean Duffy signaled that more was coming. He said a “major victory for America’s auto workers” was arriving Monday, suggesting either additional details or a formal public announcement would follow early next week.
What Comes Next
The administration has not yet published the final rule text, leaving the precise requirements unconfirmed. A formal release is expected to accompany or follow the announcement Duffy previewed for Monday.
Environmental and consumer advocacy groups are expected to scrutinize the final standards closely and may pursue legal challenges. The long-term impact on emissions, vehicle affordability and American energy consumption will depend on the specifics written into the rule once it is officially published.
