German motoring personality Klaus Niedzwiedz took on a challenge to see just how economical the 345hp (257kW) Porsche 911 Carrera could be if driven correctly. Equipped with Porsche’s PDK dual-clutch transmission, Niedzwiedz managed to cover 400 miles (648km) on public roads, achieving a mileage figure of 35mpg (6.7L/100km). In the process, he easily outperformed the combined fuel consumption specified under the Euro 5 standard which, at 24mpg (9.8L/100km) already sets the required benchmark in this category of sports cars in terms of fuel economy.
During the challenge, the Porsche Carrera covered about 118 miles (190km) of the total route on country roads and 19 miles (30km) in city traffic, with the remaining distance on the Autobahn.
Source: Motor Authority