The new 911 facelift secrets
Numerous car manufacture
rs are able to produce sportscars. But what is the defining essence of a 911? Distinctive design. Inner strength. Engineers focus on raising the bar every time. Something they have been doing for the last 45 years. The features and characteristics of the new engines speak for themselves: Depending on the model, the new all-wheel-drive Carrera offers up to 8.5 per cent more power, up to 12.9 per cent more fuel economy, and 15.4 per cent lower CO2 emissions. Specifically, output of the 3.6-litre power unit is up by 20 to 345 bhp (254 kW). At the same time a Carrera 4 Coupé with PDK, to take just one example, consumes a mere 10.1 litres of fuel per 100 kilometres, equal to 28.0 mpg imp. The improvements on the 911 Carrera 4S with its 3.8-litre power unit are equally significant, with maximum output up by 30 to 385 bhp (283 kW) on overall fuel consumption down in the case of Carrera 4S Cabriolet with PDK to 10.7 litres/100 km, equal to 26.4 mpg imp. 
In the new generation of the Carrera 4 and Carrera 4S electronically controlled PTM Porsche Traction Management replaces the former all-wheel drive with its viscous multiple-plate clutch. This superior system developed for the 911 Turbo and modified for the Carrera models combines the driving pleasure so typical of Porsche with an even higher standard of driving stability, traction and agile handling further enhanced by the mechanical rear axle differential fitted as standard.
