The tuner ABT Sportsline introduced the RS6 and RS7 Legacy Edition models with up to 986 bhp (1,000 metric hp) and 848 pound-feet (1,150 Newton-metres) of torque on tap. The package costs the equivalent of €205,000 (approx. £176,000), which includes installation, but customers need to supply the vehicle for the modifications.
The cars need to run on 102-octane fuel to make the full power. On 98-octane gas, the output falls to 927 bhp (940 metric hp) and 774 lb-ft (1,050 Nm).
Gallery: Abt Audi RS6 And RS7 Legacy Edition
ABT overhauls the engine to achieve the power upgrade. The company adds forged pistons, reinforced connecting rods, and upgraded piston pins. There's a carbon-fibre intake with revised turbos featuring enlarged air intakes. Additional oil coolers and tweaked intercoolers are also part of the package.
An indirect water/ethanol-injection (IWI) system is among the significant upgrades. An electronic control unit operates the tech. "This allows more charge air or oxygen to be supplied for the combustion of the fuel, resulting in permanently higher performance," said Thomas Biermaier, Managing Director of ABT Sportsline.
The tuner fits a 15-litre (3.963-gallon) tank for holding the water and ethanol in the rear cargo area. The filler for it is next to the gas cap. ABT estimates drivers can go 1,864 miles (3,000 kilometres) between refills. The myABT app shows the fullness of the tank. Owners need to order more IWI fluid from ABT.
Audi introduced the RS6 Avant Performance and RS7 Performance to the United Kingdom. Both of them come with a twin-turbo 4.0-litre V8 that produces 621 bhp and 627 lb-ft of torque. They can get to 60 miles per hour in 3.3 seconds. The standard top speed is 155 mph, and the limited-run Bronze Edition can hit 174 mph. Compared to the previous iterations, the Performance models feature larger turbos, less sound deadening, a lighter mechanical self-locking centre differential, and upgraded transmission control software. Prices start at £112,650.
Driving The Audi RS6: