While the 552 horsepower the new Audi RS6 Avant puts out is more than enough for most buyers, there will always be some wanting more. And for those, according to the head of Quattro Division Stephan Reil, Audi has plans for an RS "Plus" model. Speaking with Car Magazine, Reil revealed the new twin-turbo 4.0-liter V8 will get an "8-10%" boost compared to the stock RS6, so expect at least 600 horsepower. The first Plus model debuted on the first-gen RS6 Avant back in 2004, with Audi limiting production to 999 models.

However, the third-gen RS6 Plus will be a fully-fledged production model, following in the footsteps of the TT RS Plus and new R8 V10 Plus. According to Reil, Plus models have "more power or less weight and handle differently to the standard car." So weight-saving is part of Audi's plans, which will be achieved by using more carbon-fiber and aluminum in the chassis and bodywork, and perhaps a unique suspension set-up as per the R8 V10 Plus.