Audi R18 e-tron quattro
The new R 18 e‑tron quattro with which Audi competed at Le Mans in June 2014 features an entirely redesigned V6 TDI engine with a 4.0 liter capacity. It develops over 395 kW (537 hp) of power and more than 800 Nm (590.05 lb‑ft) of torque, with injection pressure above 2,800 bar. The hybrid system in the front end – the motor-generator unit and the flywheel mass accumulator – delivers more than 170 kW of power output. Audi entered the 24-hour race in the class up to two megajoules recuperative power. The new ruling limited the available power per lap, but left many other parameters open.