Athletic character, quiet understatement and richly appointed - Audi is remaking the Audi S6 and S6 Avant. Both models are sports cars for everyday use, offering uncompromising practicality. Their new engine, a four-liter, twin-turbo V8, combines ample power with low fuel consumption in keeping with the times.DriveThe Audi S6 and S6 Avant 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 and the S6 Avant in 4.9 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 class. Compared to the engine in the previous model, the free-breathing, 5.2-liter V10, it offers even sportier performance while reducing fuel consumption by as much as 25 percent. Average fuel consumption is just 9.7 liters per 100 km (24.25 US mpg) in the Audi S6 and 9.8 liters (24.0 US mpg) in the Audi S6 Avant, well below that of the competition.A number of technologies contribute to this top result, including the recuperation and start-stop systems as well as the new "cylinder on demand" cylinder management system.
When the V8 deactivates four cylinders under part load, the Active Noise Cancellation system (ANC) is activated. Four microphones integrated into the headlining record the noise in the cabin, which is then analyzed by a computer. If the computer detects intrusive sound elements, it broadcasts an antiphase sound through the speakers of the sound system. This sound combines with the intrusive sound and largely cancels it out.Independent of this, active, electronically controlled engine bearings use targeted counterpulses to attenuate low-frequency vibrations. A sound actuator, flaps in the exhaust system, the engine shroud and a newly developed two-mass flywheel with a centrifugal force pendulum in the seven-speed S tronic also contribute to the sonorous sound and smoothness of the engine.When it comes to power transmission, the S6 and S6 Avant further extend Audi's Vorsprung durch Technik. The engine power flows through a fast-shifting, seven-speed S tronic transmission. The quattro permanent all-wheel drive system uses the self-locking center differential and torque vectoring. If desired, Audi complements quattro with the optional sport differential, which actively distributes the power between the rear wheels.ChassisThe two new S models come standard with the adaptive air suspension sport. The tautly tuned air suspension with variable damping lowers the body by 10 millimeters (0.39 in).