The Trump administration weakens fuel efficiency standards for new cars

The Trump administration finalized revised Corporate Average Fuel Economy (CAFE) rules Monday, requiring new passenger car and truck fleets to improve fuel efficiency by up to 1% per year. That targets an average of 34.9 miles per gallon for model year 2031, down from Biden-era rules calling for 2% annual gains and a goal of 50.4 mpg by 2031. Officials said the change is meant to improve affordability, arguing fuel-efficiency technology is costly and pushing up vehicle prices. They estimate it will cut sticker prices by about $1,300. Supporters cite relief for families, while climate advocates warn it will increase gasoline use and pollution.