The Audi RS 6 Avant has finally arrived in North America. Now, with the help from ABT Sportsline, the worlds largest tuner of vehicles from Audi and VW, owners can further enhance power, sound and aesthetics of this legendary high-performance station wagon. By utilizing the sophisticated ABT Engine Control unit (AEC) the output of the 4.0-liter V8 increases from 591 HP / 590 lb-ft of torque to approximately 690 HP and 649 lb-ft* (with 93 octane fuel) in a safe and reliable way. The ABT Performance Upgrade comes with TÜV (German DOT) certification and a lot of engine protection measures to provide drivers with a with guilt-free driving pleasure.