The average fuel economy of new cars and light trucks sold in the U.S. in June was 25.3 mpg -- down 0.1 mpg from May 2016 -- reflecting growing pickup, SUV and crossover demand.
The average fuel economy of new light vehicles sold each month has dropped 0.5 mpg from the peak reached in August 2014 but is still up 5.2 mpg since October 2007, when researchers at the University of Michigan’s Transportation Research Institute began tracking it.
U.S. light-vehicle sales rose 2.4 percent last month compared with June 2015, with car deliveries sliding 8.8 percent and light-truck demand increasing 12 percent. Total pickup sales rose 13 percent, and SUV volume advanced 9 percent.
The average fuel economy of new vehicles remained relatively stable in the first half of the year, reaching its highest point in May at 25.4 mpg and the lowest rate in April at 25.1 mpg.
The national average for a gallon of regular gasoline was $2.269 on Tuesday, nearly 5 cents below the average of $2.767 one year ago, according to AAA data.
Another study by the institute measures the average monthly greenhouse gas emissions from individual drivers in the U.S. The University of Michigan Eco-Driving Index toed upward 0.01 in March to a value of 0.85 in April.
That value means the average new-vehicle driver produced 15 percent fewer emissions than in October 2007, the report noted.