page_title: Audi R18
section_title: 2013-spec R18 e-tron quattro
hierarchical_section_title: Audi R18 / 2013-spec R18 e-tron quattro
caption_attribution_description: LMP1 class winner, Le Mans 24 Hours 2012
context_page_description: The Audi R18 is a Le Mans Prototype 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 TDI 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's Le Mans prototype uses a closed cockpit design. The R18 is also the first racing car from Audi to feature hybrid power.
  Although Audi have previously given each new developed model of endurance racing car a distinct model number, the head of Audi Sport, Wolfgang Ullrich, suggested the R18 designation for Audi endurance racing cars could be used for the foreseeable future as a result of rival car manufacturer Renault already holding trademarks for car model names R19 through to R35. There were five further evolutions of R18 until Audi quit the FIA World Endurance Championship in 2016.
context_section_description: The R18 e-tron quattro is a hybrid version of the R18 ultra, with a 500 kJ flywheel accumulator system designed by Williams Hybrid Power, two 101 PS (74 kW; 100 hp) Bosch Motor Generator Units driving the front wheels with water-cooled integrated power electronics, providing the car with four wheel drive (quattro), and a smaller 58-litre fuel tank. The quattro system, as per the regulations, is available only at speeds above 120 km/h (75 mph).
  The e-tron has six automatic modes that are driver-selectable on the steering wheel. The modes manage engine mapping, short bursts accelerating from corners, quattro four wheel drive, wet weather, etc. Allan McNish said "I don't have to press a button ... It does it automatically ... It is like traction control."
caption: Audi R18 e-tron quattro (Overall & LMP1 class winner, 2012 24 Hours of Le Mans).
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