The U.S. government wants to raise the fuel economy of new vehicles 18% by the 2032 model year so the fleet would average about 43.5 miles per gallon in real world driving.
Currently the fleet of new vehicles must average 36.75 mpg by 2026 under corporate average fuel economy standards.
The National Highway Traffic Safety Administration safety agency says it will try to line up its regulations so they match the Environmental Protection Agency’s reductions in greenhouse gas emissions. But if there are discrepancies, automakers likely will have to follow the most stringent regulation.
