Audi R18

The Audi R18 is series of Le Mans Prototype (LMP) racing cars constructed by the German car manufacturer Audi AG. It is the successor to the Audi R15 TDI. Like its predecessor, the R18 uses a TDI turbocharged diesel engine but with a reduced capacity of 3.7 litres and in a V6 configuration. For the first time since the 1999 R8C, the Audi Le Mans prototype used a closed cockpit design. The R18 is also the first racing car from Audi to feature hybrid power.