Cnet did a review on the Mustang saying the following:
Conventional wisdom says you must trade power for fuel economy, or vice versa. In that case, the 2013 Ford Mustang GT must be either unwise or unconventional.
The newest generation of Ford's pony car, in GT form, sticks with a V-8 engine, displacing a big 5 liters, good for 420 horsepower and 390 pound-feet of torque. At the same time, the car's EPA numbers reach 18 mpg city and 25 mpg highway. I would have thought Ford found a way to game the EPA tests, until CNET's review car wound up with an average of 20 mpg over city, freeway, and back-road flogging.
Lacking direct injection, forced induction, or a colony of hamsters helping to spin the crankshaft, how does Ford defy our notions of power and fuel economy? Mostly by letting the engine run very slow in 90 percent of driving situations. Driving the Mustang GT along freeways at 70 mph or in the city at 20 mph, the tach needle stayed resolutely under 2,000 rpm, usually hovering just about 1,000. The sweep from 2,000 to redline only feels the needle on those rarer roads when you can keep the gears low and the power up.
Read more: http://reviews.cnet.com/coupe-hatchback/2013-ford-mustang-gt/4505-10867_7-35432450.html
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