Audi will enter the 24-hour Nurburgring race with a a lightweight, custom-built R8 Sports car . For the racing version, the engine size is decreased to 4.0L, producing 530HP @ 7.800 rpm and 480NM @ 7.000 rpm. Weight is also reduced to 1250 kg.
The exhaust system is custom made by Eisenmann, crankshaft by Omesa and pistons by Mahle. This is an effort by Michael Düchting, Bilstein and Sport Auto called 24h-Project 2008: Blue-Tec. It will race in the SP7 class.