Using a parallel full hybrid design with the electric motor between the combustion engine and the transmission, Porsche engineers have been able to drive at speeds up to 86 mph without at all using the combustion engine.
This engineering achievement allows the Cayenne S Hybrid to roll freely – or ‘coast’ — at highway speeds without the combustion engine on, greatly minimizing engine emissions and fossil fuel consumption. This differs from current hybrid concepts that deliver benefits mainly in city traffic. Porsche, in cooperation with Volkswagen, opted for the parallel full hybrid design as it also significantly improves acceleration, a concept that matches the company’s philosophy of offering outstanding performance and efficiency. It also fits in the current Cayenne design with minimal alterations and without affecting interior space or luggage capacity.
When it comes to market in 2010, the Cayenne S Hybrid is expected to emit some 20 percent less C02 than comparable combustion engine vehicles with similar power output. Covering a 0-to-100 km/h sprint in just 6.8 seconds, it earns its ‘S’ designation by delivering V8 performance and four-cylinder efficiency, all while complying with the Ultra Low Emission Vehicle II (ULEVII) emission standards.