What is the Audi RS6 Avant? As BMW has its M-series and Mercedes its AMG, so Audi has its RS (RennSport) line of performance cars. The distinctive RS badge is to be found on TT, 4, 5, 6 and 7-series Audis. RS Audis sit at the top of their respective model lines, a Batman-sized Kapow! … Continue reading Audi RS6 Avant review (2013-on)