Fuel-efficiency average doesn't budge from 2015 or 2104 level, as more trucks sales offset higher plug-in vehicle demand.
University Of Michigan Transportation Research Institute
It's the lowest figure since July 2013.
US average new-car fuel economy remains unchanged at 25.4 mpg in July, UMTRI says.
A study by the University of Michigan Transportation Research Institute finds diesels are much more economical to own over three to five years than gas models.
A newly released study from the University of Michigan Transportation Research Institute finds that around 10 percent of people riding in an autonomous car might experience motion sickness, if they aren't paying attention to the road.
The US average fuel economy fell in February to 25.2 miles per gallon, but that's still near the record high.
2014 model-year US vehicles averaged 25.3 mpg, a 22-percent jump over your average 2008 car.