Audi R18

The Le Mans 24 Hours, the world’s most important endurance race, will be held for the 80th time on June 16 and 17. Just in time for the anniversary event, Audi will be racing the Audi R18 e-tron quattro (the first race car with diesel hybrid to drive at Le Mans) and the Audi R18 ultra, the lightest Le Mans prototype ever built by Audi. 

Except for the hybrid system and different graphics, the R18 e-tron quattro and the R18 ultra are technically identical in every respect. Both embody ultra lightweight technology, which is one of the company’s core competencies. The new CFRP transmission housing – the first of its kind in an LMP sports car – is just one example of this ultra lightweight expertise.

In addition, both vehicle concepts are packed with numerous other innovations – from the highly efficient charging concept of the 3.7-liter V6 TDI engine with its mono VTG charger through to the digital rear-view mirror with an active matrix OLED display.

Can’t wait to see how these two sportcars will do.


Technical data Audi R18 e-tron quattro / ultra (2012)

Vehicle type Le Mans Prototype (LMP1)

Carbon-fiber composite with aluminum honeycomb,
tested according to the strict FIA crash and safety
Battery Lithium ion batteries
Turbocharged 120° V6, 4 valves per cylinder, DOHC, 1
Garrett turbocharger, mandatory intake air restrictor of 1
x 45.8 mm diameter and turbo boost pressure limited to
2.8 bar absolute, diesel direct injection TDI Fully
stressed aluminum cylinder block, diesel particle filter
Engine management Bosch MS24
Engine lubrication Dry sump, Castrol
Displacement 3,700 cc
Power Over 375 kW / 510 hp
Torque Over 850 Nm
Hybrid system*
Type of accumulator Electric flywheel accumulator, max 500 KJ, WHP
Motor Generator Unit (MGU) MGU on the front axle, water cooled with integrated
power electronics, 2 x 75 kW
Drive / transmission
Type of drive Rear wheel drive, traction control (ASR),
four-wheel drive e-tron quattro from 120 km/h*
Clutch Carbon clutch
Gearbox Sequential, electrically activated 6-speed racing
Differential Limited-slip rear differential
Gearbox housing Carbon-fiber composite with titanium inserts
Driveshafts Constant velocity sliding tripod universal joints
Suspension / steering / brakes
Steering Electrical assisted rack and pinion steering
Front and rear double wishbone independent
suspension, front pushrod system and rear pull rod
system with adjustable dampers
Hydraulic dual circuit brake system, monobloc light
alloy brake calipers, ventilated carbon disc brakes
front and rear, infinitely manually adjustable front and
rear brake balance
Wheels O.Z. magnesium forged wheels
Tires Michelin Radial,
Front: 360/710-18, rear: 370/710-18
Weight / dimensions
Length 4,650 mm
Width 2,000 mm
Height 1,030 mm
Minimum weight 900 kg
Fuel tank capacity 58*/60 liters
*Different specification for R18 e-tron quattro