Confirming earlier leaks, the EPA has revealed a drop in fuel efficiency for most of Ford’s 2015 Mustang models.
The new four-cylinder turbocharged EcoBoost engine achieves higher efficiency than any of the 2014 V6 engine options, with a city/highway rating of 21/32 mpg with an automatic transmission. In contrast, the outgoing entry-level V6 model with a six-speed automatic posts 19/31 mpg.
Buyers eyeing the base model may be disappointed to find that the same V6 engine only gets 19/28 mpg for the 2015 model. It is also slightly heavier, and detuned with five less horsepower in a possible attempt to widen the performance gap with the turbo four-cylinder variant.
The GT trim with an automatic transmission has been downgraded slightly in the city to 16 mpg from 18 mpg, though the highway rating remains unchanged at 25 mpg. Many buyers will likely disregard the penalty, as the GT’s 5.0-liter V8 has been uprated to 435- horses and 400 lb-ft of torque for the latest model year.