The 2008 Porsche Cayenne is a 4-door, 5-seat Sport Utility, available in 6 trims, ranging from the Base to the GTS. Upon introduction, the $46,400 Base is equipped with a standard 3.6L, 6-cylinder, engine that achieves 14-mpg in the city and 20-mpg on the highway. An Automatic transmission is standard. The $72,200 GTS is equipped with a standard 4.8L, 8-cylinder, engine that achieves 13-mpg in the city and 18-mpg on the highway. An Automatic transmission is standard.