The 2020 Cadillac CT5 is available as a 4-door, 5-seat sedan. Starting at $36,895, the 2020 Cadillac CT5 Luxury RWD is powered by a 2.0LL , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 23-mpg in the city and 32-mpg on the highway. The top of the line 2020CadillacCT5V-Series AWD , priced at $ 47,695 , is powered by a 3.0LL , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 25-mpg on the highway.