Two Coupes with some similarities, but otherwise different in most aspects such as the model year, horsepower, fuel economy, ground shadow size, market segment, and height. First of all, there is a difference in model years. The is 3 years newer. Also, the 2013 Shelby GT500 Coupe has bigger and thirstier engine; the 2016 TTS gets 7 more mpg. In addition, the TTS is both significantly smaller and slightly shorter than the Shelby GT500 Coupe. Among similarities are the body structure, market segment, starting price, and maximum occupancy.