Equipped with a 3.7-liter V6 engine and a six-speed manual transmission, the base 2015 Mustang gets an EPA-estimated 17/28 mpg city/highway, which is a bit lower than the 19/29 mpg that a comparably equipped 2014 Mustang delivers. V6-powered Mustangs with the six-speed automatic transmission also see a fuel economy dip, returning 19/28 mpg city/highway. In comparison, the 2014 model earns three mpg more on the highway with a 19/31 mpg rating.
When equipped with a manual transmission, the V8-powered 2015 Mustang GT matches the 2014 model’s city estimate, but earns one mpg less on the highway with a 15/25 mpg city/highway rating. 2015 Mustang GT models with an automatic get 16/25 mpg city/highway, while a similarly equipped 2014 Mustang GT is rated two mpg higher in the city, with 18/25 mpg city/highway. However, with 435 horsepower, the 2015 Mustang GT also has 15 more horsepower than the outgoing model.
Edmunds writes, “Not surprisingly, the best fuel economy in the 2015 Mustang range is produced by the 2.3-liter turbocharged four-cylinder EcoBoost engine.”
EcoBoost models with the six-speed manual transmission get an EPA-estimated 22/31 mpg city/highway, while automatic models get 21/32 mpg.
The 2015 Mustang starts at $24,425 and is slated to go on sale this fall.