The Audi RSQ concept vehicle series include:

The Audi Le Mans quattro is a concept car, developed by German automobile manufacturer Audi, for presentation at the 2003 Frankfurt Motor Show, to celebrate Audi's three successive wins at the arduous 24 Hours of Le Mans endurance race in 2000, 2001, and 2002. It was the third and final concept car designed by Audi in 2003, following the Pikes Peak quattro and the Nuvolari quattro.