2011 Ford Mustang GT. . The 2011 Mustang GT introduced at the North American International Auto Show in Detroit will feature a thoroughly modern five-liter V-8 engine that will have all the niceties of twin independent variable valve timing for its four-valve configuration that will allow it to deliver 412 horsepower and 390 ft.-lb. of torque. A variety of techniques move this new engine a long way from the âgas guzzlerâ category; instead it offers fuel economy estimated to be 25 miles per gallon on the highway. For more new car reviews, interviews and automotive news visit http://www.kbb.com today.