The Carrera 4 is powered by a 3.6-litre power unit that delivers 345 bhp. Featuring the new PDK system the fuel consumption goes down to 10.1 litres of fuel per 100 kilometres, equal to 28.0 mpg imp.
The 911 Carrera 4S is powered by a 3.8-litre power unit that delivers 385 hp and the fuel consumption goes down to 10.7 litres/100 km, equal to 26.4 mpg imp.
The new all-wheel-drive sports cars come with sporting manual transmission featuring six gears. As an alternative the new models are available with Porsche’s new Doppelkupplungsgetriebe replacing the former Tiptronic S automatic converter transmission and offering an even faster gearshift on less fuel.
Source: Top Speed