Power and Driving Pleasure up, Emissions and Fuel Consumption down : introducing a wide range of new highlights in technology, Porsche is raising the sportiness, efficiency and environmental compatibility of the classic rear-engined 911 to an even higher level than before. The all-new power units in the 911 Carrera models with their 3.6-litre and the 911 Carrera S versions with their 3.8-litre power units come with direct gasoline injection and are even available as an option with Porsche's new double-clutch transmission (PDK).