Average gas mileage on new cars, SUVs and pickup trucks sold in November was 24.9 miles per gallon, according to the University of Michigan's Transportation Research Institute.
The institute has been tracking new-car mileage since 2007. In a release Friday, it said the November fuel-economy rating was an improvement of 4.8 mpg since monitoring began. But it was lower than the peak, 25.5 mpg, set in August 2014.
According to the federal government's CAFE (corporate average fuel economy) standards, "fleet-wide fuel economy" by 2021 should be at least 40.3 miles per gallon.
Michael Sivak, director of sustainable worldwide transportation for the Michigan institute, said in Friday's release that November's 24.9 mpg rating was unchanged from October's.