
2013 Audi S6: The Audi S6 use the 309 kW (420 hp) version of the new 4.0 TFSI. The twin-turbo V8 provides a constant 550 Nm (405.66 lb-ft) of torque from 1,400 to 5,300 rpm. It accelerates the S6 from 0 to 100 km/h (62.14 mph) in 4.8 seconds. With both models, the electronically governed top speed of 250 km/h (155.34 mph) is just a formality.The 4.0 TFSI brings Audi’s downsizing strategy to the high-performance...