The 2015 Cadillac CTS is a 4-door, 5-seat Sedan, available in 16 trims, ranging from the 2.0L Turbo RWD to the 3.6L Premium AWD. Upon introduction, the $45,345 2.0L Turbo RWD is equipped with a standard 2.0L, 4-cylinder, engine that achieves 20-mpg in the city and 30-mpg on the highway. An Automatic transmission is standard. The $63,770 3.6L Premium AWD is equipped with a standard 3.6L, 6-cylinder, engine that achieves 18-mpg in the city and 26-mpg on the highway. An Automatic transmission is standard.