A pair of new R15 TDI race cars will make their race debut at the Sebring 12-hour race next month, but the highly anticipated Le Mans Prototype has already been seen running development laps.

The much-anticipated Audi R15 TDI has finally be spotted for the first time during a secret test at the Vallelunga track in Spain. Audi has been keeping a tight lid on the R15 since announcing it ...

Audi has tweaked its R15 TDI racing car ready for the 2010 Le Mans 24 hours. Change was necessary as the sport’s new regulations aim to peg back the oil-burning entries that have ran away with ...