The average fuel economy of cars and light trucks, driven by wider use of technology such as direct injection and advanced transmissions, increased to a record 24.1 mpg in the 2013 model year, though the pace of improvement slowed.
The average fuel economy of cars and light trucks, driven by wider use of technology such as direct injection and advanced transmissions, increased to a record 24.1 mpg in the 2013 model year, though the pace of improvement slowed.