DETROIT - GM stated that the Sonic equipped with the Ecotec 1.4L and six-speed automatic transmission achieved fuel-economy performance of 37 mpg highway, 27 city.
Report Shows Top 10 Vehicles With Highest Fuel-Economy Gains Between 2008 and 2012
SANTA MONICA, CA – A new report from Edmunds.com shows the brands and vehicles that achieved the largest fuel-economy gains, on a percentage basis, between 2008 and 2012.