Ford mustang 2011 The 2011 Ford Mustang gets more power, suspension and steering upgrades, and new front and rear fascias following its model-year 2010 freshening. V6-powered, high-performance V8-powered GT, and ultra-high-performance Shelby GT500 Mustangs are offered, each available as a 2-door coupe or soft-top convertible. The V6 models have a new 305-horsepower 3.7-liter engine, which replaces a 210-horsepower 4.0-liter V6.