
The Audi R18, is a Le Mans Prototype (LMP) racing car constructed by the German car manufacturer Audi AG. It is the successor to the Audi R15 TDI. Like its predecessor, the R18 uses a 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 Audi has chosen a closed cockpit design for their Le Mans prototype. As per the new rules the car features a stabilisation fin on the engine cover and also has a new 6-speed gearbox. Despite the capacity reduction, the 3.7L V6 can still make 550bhp. This is less than the outgoing R15, but the V6′s fuel consumption is doupt to be much better than the V10.