In the RS4 and RS6, weight reduction possibilities are limited because of what customers expect in this type of car. “It makes sense in a sports car like the TT and in the future maybe on an R8. An RS model has to have outstanding handling performance, the car must be able to have have good records on not just daily driving but also on a race track. All Quattro GmbH cars go through a durability test on the Nurburgring NordSchliefe for 8,000km. That’s where we check the racing abilities and the durability. On an RS you also need outstanding quality on the details. That means the materials, how it’s crafted…” As is typical of Audis, the RS4 has excellent interior fit and finish. The black leather seats are accented with white piping while a strip of carbon fiber traverses the dash from door to door and another piece surrounds the shifter.