U.S. Lowers 2031 Fleet Fuel-Economy Target to 34.9 MPG

The Transportation Department finalized a rule lowering the 2031 fleet-average target — the average mileage required across an automaker's new vehicles — to 34.9 mpg from 50.4. The department called it one of the second Trump administration's largest deregulatory actions, saying it restores integrity to the program while balancing affordability and conservation.