2012 Chevy Sonic with 1.4L Turbo delivers 40 mpg on highway
Green Car Congress
SEPTEMBER 16, 2011
L/100km) on the highway with a six-speed manual transmission and city fuel economy of 29 mpg (8.1 The Sonic’s highway fuel economy makes it one of the most fuel-efficient small cars in the market, with fuel economy equivalent to the 2012 Ford Fiesta SFE and on a par with the 2012 Hyundai Accent.
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