Audi Sport GmbH celebrates the world debut of the new Audi RS4 Avant at the IAA 2017. It combines high performance with tremendous everyday usability. Its 2.9 TFSI engine with 331 kW (450 hp) and 600 Nm of torque makes it the sporty vanguard of the A4 family. The V6 biturbo develops 331 kW (450 hp) in the new Audi RS4 Avant. Its peak torque of 600 Nm (442.5 lb-ft) – 170 Nm (125.4 lb-ft) more than the previous model – is available across a broad engine speed range from 1,900 to 5,000 rpm. It is key to how the Audi RS4 is able to sprint from 0 to 100 km/h (62.1 mph) in 4.1 seconds. The top speed is 250 km/h (155.3 mph). With the optional RS dynamic package, the top speed increases to 280 km/h (174.0 mph). The power of the 2.9 TFSI biturbo is supplied to the permanent all-wheel drive via a sportily configured eight-speed tiptronic with optimized gear changing. Audi also offers an optional rear sport differential. Average fuel consumption is 8.8 liters per 100 kilometers (26.7 US mpg) (199 grams of CO2 per kilometer [320.3 g/mi]). That is an efficiency gain of 17 percent over the previous model. The new Audi RS4 Avant weighs 1,790 kilograms (3,946.3 lb) 80 kilograms (176.4 lb) less than previously.