The Audi RS6 Avant is the station wagon variant of the C5 Audi RS6. Introduced for the 2003 model year, the RS6 Avant was an all wheel drive performance wagon that was powered by a twin-turbocharged 4.2L V8 engine. This powerplant developed 444hp, which it sent to the wheels through a 5 speed automatic transmission. These highly capable performance wagons were never sold in North America. Production of the C5 RS6 Avant lasted until 2004, but the RS6 model series would continue life in the next generation A6 as the C6 Audi RS6.