The 2021 Porsche Cayenne Coupe is available as a 4-door, 4-seat sport utility. Starting at $76,500, the 2021 Porsche Cayenne Coupe 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 2021PorscheCayenne CoupeTurbo , priced at $ 131,900 , 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.