Porsche Reveals Details of its Cayenne S Hybrid System

By KBB.com Editors on February 20, 2009 11:30 AM

Claiming it will deliver the performance of a V8, the economy of a four-cylinder and offer a 20 percent reduction in relative CO2 emissions, Porsche has offered some new insight into the full-hybrid package that it will offer in the Cayenne S Hybrid due in 2010. A similar setup, which allows the vehicle to operate in gasoline, electric or combination mode, will be fitted to the Panamera Hybrid sedan that follows at some point thereafter.

The Cayenne S Hybrid will pair a supercharged 3.0-liter Audi V6 that makes 333 horsepower and 324 lb.-ft. of torque from 2,900-5,300 rpm with a 52-horse electric motor/alternator that can deliver another 221 lb.-ft. of torque and replenish the vehicle's compact 38-kilowatt nickel-metal hydride (Ni-MH) battery pack. Completing the mix is an eight-speed automatic transmission. Like many of its peers, the Cayenne S Hybrid also will be equipped with electric power-steering and air conditioning systems as well as a high-efficiency regenerative braking setup.

According to Porsche, the new Cayenne S Hybrid will be able to run from 0-60 mph in about 6.8 seconds and travel up to 1.2 miles on electric power alone. More impressive, its sophisticated Hybrid Manager control unit is designed to allow this gas-electric SUV to cruise in zero-emissions mode at speeds of up to 86 mph in eighth gear. Porsche expects the new Cayenne S Hybrid will consume less than nine liters of gasoline per 100 kilometers on the New European Driving Cycle -- which translates to about 26 mpg in EPA terms -- and qualify for Ultra Low Emission Vehicle II (ULEV II) status when it does go on sale here.