The Cayenne Turbo was powered by a water-cooled V8 engine with twin-turbocharging. From model year 2005 onwards, the Cayenne Turbo I was offered with an enhanced performance level. This version produced 50 PS more than the Cayenne Turbo I without the increased performance enhancement.
In model year 2006, Porsche introduced the top-of-the-range Cayenne Turbo S model.