It's the new diesel-powered racer that Audi hopes will take the fight to the Peugeot 908 once again.

The wraps come off the Audi R15 TDI which appears just in time in time for the 12 Hours of Sebring race. It's the new diesel-powered racer that Audi hopes will take the fight to the Peugeot 908 once again.

The oil-burning Audi and Peugeot will be competing under modified LMP1 rules that have cut their wing widths by 40 mm (for all P1 cars) and reduced the size of their air restrictors and amount of turbo boost pressure for the diesels. The new R15 has been optimised with a reduction in weight, radically new aerodynamics and an all-new powertrain to work with the new rules while still trying to outrun the Peugeots.

The R15 will only run at Sebring next week and the 24 Hours of Le Mans in July, confirming Audi's announcement last year that it would be limiting its ALMS involvement in 2009.