The Audi R18 Ultra is a Le Mans Prototype racing car. It was the evolution of the successful R18 TDI, and was designed in year 2012 to race the 24 hours of Le Mans and the World Endurance Championship.
It's the same car as the R18 e-tron, but without hybrid drive.
The chassis is a carbon fiber monocoque, a very light and yet very safe design. The gearbox is a 6 speed electrically actuated unit, with ample use of carbon composite parts.
All front and rear lights are made with LED, with a very distinctive tail lights design around the rear wing.
The diesel engine is an evolution from the previous years' 6 cylinder 120° V 3.7 liters design, with one single turbo and exhaust placed in the middle of the motor's V, right under the rear fin of the car. Maximum power is estimated at 550 hp (410kW)
Audi entered the 24 Hours of Le Mans in 2012 with two R18 Ultra, as well as two R18-etron. Car No.4, driven by Marco Bonanomi, Oliver Jarvis and Mike Rockenfeller, reached the finish line in third position.