2015 Audi R18 e-tron quattro unveiled

Rumours of a move into Formula One persist, but for now at least Audi remains fully committed to the FIA World Endurance Championship. Its contender for the 2015 season is a heavily-revised R18 e-tron quattro.

Alterations to the car's styling have focussed on aerodynamic improvements. While the basic monocoque is essentially unchanged, the front bodywork is all-new. Furthermore, the engine cover is more compact and modified sidepods should better deliver cooling air to the radiators.

Audi R18 e-tron quattro LMP1 2015 Front Side

Audi has also taken the opportunity to enhance the R18's hybrid powertrain. In a significant move, its 4.0 litre V6 TDI diesel engine – which produces 550 bhp (410 kW / 558 PS) – uses 2.5% less fuel than before.

Such an efficiency gain is required by the regulations, because the amount of energy available from regenerative braking on each lap of Le Mans has been doubled from two to four megajoules. Stored within a flywheel system, that extra output is sent to the front wheels via a 268 bhp (200 kW / 272 PS) electric motor.

This year's World Endurance Championship begins next month with the 6 Hours of Silverstone.

Audi R18 e-tron quattro LMP1 2015 Rear SideAudi R18 e-tron quattro LMP1 2015 Side

Related posts:
Nissan reveals its GT-R LM Nismo
2015 FIA WEC calendar confirmed

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