NHTSA proposes 58 mpg standard for new vehicles by 2032

WASHINGTON — Three months after the EPA proposed its strictest-ever limits on tailpipe pollution, NHTSA has outlined fuel economy standards for new light-duty cars and trucks that would require an average fleet fuel economy of 58 mpg by the 2032 model year. The rule requires an industrywide fleet average of approximately 49 mpg in the 2026 model year. It also would prevent more than 900 million tons of carbon dioxide emissions from passenger cars and light trucks — the equivalent of taking more than 233 million vehicles off the road from 2022 through 2050, NHTSA said. To be sure, NHTSA sets standards for five model years at time. The EPA in April unveiled its proposal to significantly reduce vehicle emissions for cars and light trucks in the 2027-32 model years.