The 2018 Porsche Cayenne is available as a 4-door, 5-seat sport utility. Starting at $60,600, the 2018 Porsche Cayenne Base 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 24-mpg on the highway. The top of the line 2018PorscheCayenneTurbo S , priced at $ 161,600 , is powered by a 4.8L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 21-mpg on the highway.