page_title: Mercedes-AMG
section_title: "63" M157 5.5 L V8 Bi-Turbo
hierarchical_section_title: Mercedes-AMG / Previous AMG models / "63" M157 5.5 L V8 Bi-Turbo
caption_attribution_description: English: Mercedes-Benz E 63 AMG T 4MATIC
context_page_description: Mercedes-AMG GmbH, commonly known as AMG, is the high-performance subsidiary of Mercedes-Benz AG. AMG independently hires engineers and contracts with manufacturers to customize Mercedes-Benz AMG vehicles. The company has its headquarters in Affalterbach, Baden-Württemberg, Germany.
  AMG was originally an independent engineering firm specializing in performance improvements for Mercedes-Benz vehicles. DaimlerChrysler AG took a controlling interest in 1999, then became the sole owner of AMG in 2005. Mercedes-AMG GmbH is now a wholly owned subsidiary of Mercedes-Benz AG, which is owned by Daimler AG.
  AMG models typically have more aggressive looks, a higher level of performance, better handling, better stability and more extensive use of carbon fibre than their regular Mercedes-Benz counterparts. AMG models are typically the most expensive and highest-performing variant of each Mercedes-Benz class.
  AMG variants are usually badged with two numerals, as opposed to regular Mercedes-Benz vehicles, which have three. The numerals do not always indicate engine size, but are rather a tribute to earlier heritage cars, such as the 300 SEL 6.3 litre.
context_section_description: The models listed below were powered by the M157 variant of the Mercedes-Benz M278 engine.
  Mercedes-AMG CLS 63 (W218)
  Mercedes-AMG E 63 (W212)
  Mercedes-AMG G 63 (W463)
  Mercedes-AMG GL 63 (X166 pre-facelift)
  Mercedes-AMG GLE 63 (W166 facelift)
  Mercedes-AMG GLS 63 (X166 facelift)
  Mercedes-AMG M 63 (W166 pre-facelift)
  Mercedes-AMG S 63 (W222 pre-facelift)
  Rumoured in 2009 and confirmed in 2010, AMG developed the M157, a 5.5-litre V8 with direct fuel injection and twin turbochargers. Power is rated at up to 577 bhp (430 kW; 585 PS) at 5,250-5,750rpm with a peak torque of 664 lb⋅ft (900 N⋅m) made between 2,000rpm and 4,500rpm (the amount of power and torque depends on model, but these are the maximum ratings). Both engines are mated to Mercedes-Benz's 7-speed MCT transmission.
  Unlike the M156 naturally aspirated 6.2 L V8, which was developed entirely within AMG, the M157 is based upon the M278 used in the regular Mercedes-Benz S-Class and CL-Class. The M157 boasts 25% better fuel economy (10.5 litres per 100 kilometres versus 14.4 L/100 km in the European driving cycle) over the M156, meaning it avoids the US Gas Guzzler Tax for the first time ever, despite having up to 47 horsepower more. The M157's increased torque from both the regular version and performance package means the engine can be shifted into a taller gear sooner, keeping engine revs and fuel consumption to a minimum. The new M157 has an engine start/stop mode and is lightweight at 204 kg. The M157 is said to be ideal for powering full-size sedans such as the S-Class, but the older M156 remains in production, as its more precise throttle response is still well suited to smaller sportier models (the C-Class), until the 2015 model arrives, which is powered by a 4.0 liter V8.
  5.5 L V8 BiTurbo models carry the "63" model designation, shared with the 6.2L V8 models. Visually, the 2011 S 63 AMG is differentiated from the 2010 model (itself face-lifted over the 2009 S 63) by the more angular design of the chromed dual exhaust tips, which also sport embossed AMG logos, as well as new forged wheels. For the CL 63 AMG, the new M157 engine coincides with the facelift of the CL-Class for the 2011 model year.
  Despite common belief, 65 AMG models are typically faster than their 63 AMG counterparts. An S 63 AMG accelerates faster and handles better than an S 65 AMG (due to 4-wheel drive and decreased weight), and an SL 63 AMG accelerates faster than an SL 65 AMG due to decreased torque, lower weight, and better balance by use of the V8.
  Since 2013, AMG models with the S-Model package feature all-wheel drive, which allows for better handling and better acceleration. The Mercedes-Benz CLS 63 AMG S has been tested to accelerate to 60 mph in just 3.2 seconds, with a quarter mile time of 11.6 seconds. This made it the quickest production sedan at the time. MotorTrend tested the 2014 E 63 AMG S with the M157 engine to produce an estimated 676 bhp (504 kW; 685 PS) and 631 lb⋅ft (856 N⋅m).
caption: E 63 AMG 4MATIC T
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