The Audi RS6 Avant and RS7 Sportback are now available as a new Performance model option with the twin-turbo V8 now producing close to 600bhp.
Updates on the engine management system, a higher rev limit and extra boost pressure raises maximum power on the 4.0-litre V8 TFSI to a 597bhp and torque to 516 lb-ft. Up from the standard 552bhp with torque staying the same.
As a result 0-62mph comes in 3.7 seconds, a 0.2 second improvement. 0-12 mph takes now just 12.1 seconds, down by 1.4 seconds compared to the regular RS6 and RS7 models.
Top speed is is increased from the standard 155mph to 174mph and can optionally increased to 189.5mph (305 km/h).
There is also a revised version of the 8-speed tiptronic, sending power to the quattro permanent AWD system.
Adaptive air suspension lowers both the RS6 and RS7 by 20 mm while at an additional cost you can order the dynamic steering system benefiting from a continuously variable steering ratio.
All this rides on new 21-inch alloys fitted with 285/30 tyres on the RS6 and 275/30 tyres on the RS7. Four ventilated disc brakes are standard with carbon fiber ceramic discs optional.
Other minor changes include sportier front bumper with bigger air inlets, glossy black honeycomb grille and a more aggressive diffuser.
UK pricing has not been announced yet with prices in Germany starting from €117,000 for the RS6 and €121,700 for the RS7 Sportback.