The 2017 Cadillac CTS is available as a 4-door, 5-seat sedan. Starting at $45,995, the 2017 Cadillac CTS 2.0L Turbo Base RWD is powered by a 2.0L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 30-mpg on the highway. The top of the line 2017CadillacCTS3.6L Premium Luxury AWD , priced at $ 61,195 , is powered by a 3.6L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 27-mpg on the highway.