After a long hiatus, the second Audi RS4 quattro (Typ 8E), built on Audi's "B7" A4 platform, by quattro GmbH in Neckarsulm, Germany (a wholly owned private subsidiary of Audi AG), was unveiled in February 2005 at Audi's 'Quattro Night' celebration at the company headquarters in Ingolstadt, Germany. The RS4 came down a replica of a ski jump then spun several times on an ice rink before coming to rest in the center of the ice. After several minutes to allow the assembled media and guests to examine the car, the RS4 climbed the ski jump and parked near the top. The ski jump was an homage to an audi commercial from 1986 where an Audi climbed a ski jump in Finland to showcase its superior traction due to the quattro drivetrain. The RS4 became available to European customers in mid 2006. It was introduced at the 2006 North American International Auto Show in January, and arrived in August 2006 North America. There was no RS4 built on the Audi "B6" platform which served as the basis for the Audi A4 between 2001 and 2005.
The B7 RS4 is an almost complete departure from previous RS cars, as it was initially available as a saloon/sedan; with an Avant (estate/wagon), and Cabriolet (convertible) versions arriving later. Only the RS6 had taken this similar route (saloon and avant) before; the previous RS4 and RS2 were available exclusively as Avants. The production run of the B7 RS4 was 2006 to 2008 inclusive, although only 2007 and 2008 model year were sold in the USA