Photo of EPA fuel economy label via Wikimedia.

Photo of EPA fuel economy label via Wikimedia.

The average fuel economy of new vehicles sold in July increased 0.1 mpg to 25.4 mpg from June, according to the University of Michigan's Transportation Research Institute (UMTRI).

Fuel economy is down 0.4 mpg from the peak reached in August of 2014, but still up 5.3 mpg since October of 2007, according to UMTRI researchers Michael Sivak and Brandon Schoettle.

The University of Michigan Eco-Driving Index (EDI), which estimates the average monthly emissions of greenhouse gases generated by an individual U.S. driver, reached 0.82 in May, which was down 0.03 from the value for April (the lower the value the better).

This value indicates that the average new-vehicle driver produced 18% lower emissions in May than in October 2007, but 4% higher emissions than the record low reached in August of 2014 and August of 2015.