Porsche Cayenne S Hybrid

The hybrid version of Porsche’s popular Cayenne SUV proves that performance and efficiency aren’t mutually exclusive. Powered by a 333-horsepower supercharged V6 and a 47-horsepower electric motor mated to an eight-speed transmission, the Cayenne is as nearly as fast as the V8 version, yet it delivers 20 mpg in the city and 24 mpg on the highway—up from 13 mpg city and 19 mpg highway. It also includes a smart feature that gasoline versions do not: On a downhill, the Cayenne shuts off the engine and decouples it from the transmission, so the car coasts fuel-free at highway speeds while recharging the battery. $69,000