It looks like Audi has set its mind to fill all the performance niches in the premium category. Following news on the development of a hot S6 based on the latest iteration of Ingolstadt’s executive mid-size model, our man with the long lens has caught a prototype version of the upcoming RS4 Avant testing around the Nurburgring race track.
Even though the prototype is a test mule based on the S4 Avant, there are certain elements that tell us there’s something different about this model. These include the heavily blistered front and rear wheel arches housing the same dark 20-inch alloy rims found on the RS5 Coupe, as well as a modified front bumper with different air vents to supply additional cooling to the engine.