The Audi R10 TDI is among the most successful cars in all of racing history. After dominating Le Mans racing in 2006 and 2007, Audi faced a new challenger in the LMP1 class from Peugeot.

Following up on the immense success of the R10 TDI race car, Audi has been hard at work on its successor. A pair of new R15 TDI race cars will make their race debut at the Sebring 12-hour race ...