The Audi RS4 Avant was a variant of the B7 RS4 that was introduced for the 2007 model year. These high performance station wagons (known as 'Avants') were equipped with a raft of mechanical upgrades over the standard A4, as well as various cosmetic features that improved aerodynamics and gave the car a distinct look. The RS4 was powered by a 4.2L naturally aspirated V8 engine that had an output of 414hp that sent drive through a 6 speed manual transmission. This gearbox was paired to Audi's Quattro four wheel drive system to send power to all four wheels. The B7 Audi RS4 Avant was never sold in North America, and was in production until 2008. The RS4 model series would continue in the next generation B8 Audi RS4.