The 2018 Cadillac ATS-V is available as a 4-door, 5-seat sedan. Starting at $61,595, the 2018 Cadillac ATS-V Sedan is powered by a 3.6L , 6 -cylinder engine mated to a manual transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway. The top of the line 2018CadillacATS-VCoupe , priced at $ 63,795 , is powered by a 3.6L , 6 - cylinder engine mated to a manual transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway.