The 2020 Cadillac XT6 is available as a 4-door, 7-seat sport utility. Starting at $52,695, the 2020 Cadillac XT6 FWD is powered by a 3.6L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 25-mpg on the highway. The top of the line 2020CadillacXT6Sport AWD , priced at $ 57,095 , is powered by a 3.6L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 24-mpg on the highway.