The 2021 Porsche Cayenne is available as a 4-door, 5-seat sport utility. Starting at $67,500, the 2021 Porsche Cayenne Base is powered by a 3.0LL , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 23-mpg on the highway. The top of the line 2021PorscheCayenneTurbo , priced at $ 127,800 , is powered by a 4.0LL , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 19-mpg on the highway.