The 2017 Cadillac CTS is a 4-door, 5-seat Sedan, available in 10 trims, ranging from the 2.0L Turbo Base RWD to the 3.6L Premium Luxury AWD. Upon introduction, the $45,560 2.0L Turbo Base RWD is equipped with a standard 2.0L, 4-cylinder, engine that achieves 21-mpg in the city and 31-mpg on the highway. an Automatic transmission is standard. The $60,760 3.6L Premium Luxury AWD is equipped with a standard 3.6L, 6-cylinder, engine that achieves 19-mpg in the city and 28-mpg on the highway. an Automatic transmission is standard.