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 nation’s top auto safety regulator on Friday said its new standards for the 2027-32 model years would require a 2 percent per year improvement in fuel efficiency for cars and a 4 percent per year improvement for