Developed by quattro GmbH, the RS models comprise the dynamic spearhead of Audi's model range. The RS 5 is the latest torchbearer in a tradition dating back over 15 years to the RS 2 Avant: superior handling in the mid-size class.
A close relative of the V10 which powers the high-performance R8 sports car, the high-revving V8 engine in the RS5 delivers its output from a displacement of 4.2 liters. Like nearly every Audi gasoline engine, this one also operates via direct fuel injection known by the abbreviation FSI. This same technology has propelled the Audi R8 racing car to four triumphs at the classic endurance race in Le Mans. The commonrail system generates up to 120 bars of pressure.
Intensive fine-tuning of the dual-branch intake and exhaust system allows the undersquare engine to breathe freely; four adjustable camshafts and tumble flaps in the intake manifold to facilitate mixture formation. The 4.2 FSI provides imposing torque and is right at home even at high revs almost like a race engine. The engine delivers 331 kW (450 hp) at 8,250 rpm and between 4,000 and 6,000 rpm - transmits a maximum of 430 Nm (317.15 lb-ft) of torque.
The vigorous strength of the 4.2 FSI propels the RS5 from 0 to 100 km/h in 4.6 seconds to an electronically governed top speed of 250 km/h. Audi can increase that to 280 km/h (173.98 mph) upon request.