Get Vw Passat Estate Vs Audi A6 Avant Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs. Audi a6 avant/vw passat variant: Mazda 6 Wagon vs Audi A6 Avant - YouTube from i.ytimg.com I would prefer buying the passat, but if the audi has a bigger trunk (?) then. Both cars are considered luxury cars were the passat is entry level the strong recommendation — check out both the passat and the a6 critically, recognizing that they are now significantly different cars.