Mercedes-Benz Faces Class Action Lawsuits for AMG V8 Engines

For those of you that have not heard by now, Mercedes-Benz is facing a class action lawsuit for alleged defects in the M156 V8 engine installed in numerous AMG Mercedes vehicles. You can read the class action complaint filed in New Jersey here.

According to the lawsuit, the class action may affect all current and former owners and lessees of 2006-2011 Mercedes-Benz C63 AMG, E63 AMG, S63 AMG, CL63 AMG, CLS63 AMG, ML63 AMG, CLK63 AMG, R63 AMG, and SL63 AMG models equipped with AMG M156 6.2 liter V8 engines.

The class action lawsuit alleges the V8 engines in several AMG vehicles have underlying problems that make them prone to premature wear, causing major engine damage and sometimes total engine failure.

AMG Mercedes-Benz M156 V8 EngineLos Angeles resident Cedric Chan alleges in the Mercedes-Benz AMG class action lawsuit that after obtaining his AMG he experienced problems with loud ticking noises under the hood and a drop in oil pressure. The lawsuit suggests the ticking and drop in oil pressure was the beginning of the AMG engine’s destruction. The apparent problem according to the lawsuit is that the defective AMG engines are manufactured using soft camshaft metal that is improperly heat treated and/or improperly offset, making the camshaft prone to premature wear. It appears Mercedes-Benz was somewhat aware of the defect since at least 2007 when a service bulletin was released. Service bulletin S-B 05.20/20b involved parts relating to the camshafts, including the camshaft adjusters and authorized replacement for at least some adjusters; subsequent revisions to the service bulletins include P-B 05.20/20a and T-B 05.20/21a.

Due to the premature wear of the camshafts, the camshafts, valve lifters, camshaft adjusters, valve tappets, gaskets and bushings all have to be replaced.”The cost of replacement is thousands of dollars, which was passed on to Plaintiff, because Defendants did not issue a recall for the defect, even though they knew it to exist.’” (see the class action complaint here for more info).

For those interested, here is a little more info on the M156
(Source: http://en.wikipedia.org/wiki/Mercedes-AMG#.2263.22_M156_6.2L_V8 )

M156 L 6.2 V8 models

  • 2007 S63 AMG (introduced at the 2006 Paris Motor Show)
  • 2007 ML63 AMG (introduced at the 2006 North American International Auto Show)
  • 2007 R63 AMG (introduced at the 2006 North American International Auto Show)
  • 2007 CLK63 AMG (introduced at the 2006 Geneva Motor Show) (used as Safety Car for the 2006 and 2007 F1 World Championship)
  • 2007 CLS63 AMG (introduced at the 2006 Geneva Motor Show)
  • 2008 C63 AMG (Sedan and Wagon) (facelifted for the 2012 model year)
  • 2007 E63 AMG (Sedan and Wagon)
  • 2008 CL63 AMG
  • 2009 SL63 AMG
  • 2010 E63 AMG (Sedan and Wagon)

 

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14 thoughts on “Mercedes-Benz Faces Class Action Lawsuits for AMG V8 Engines

  • Pravesh Singh

    (November 13, 2011 - 2:59 pm)

    Will the new c63 Coupe just launched be also affected with the enginme defects.

    • Kim

      (May 1, 2012 - 12:38 am)

      I would think it will. I purchased a C63 last June (April 2011 build) and already have had the engine re built under warranty.

      • admin

        (May 17, 2012 - 3:15 pm)

        Kim,
        Did Mercedes AMG tell you what went wrong with your engine by any chance? Was it the same issue as the lawsuit?

        • Kim

          (May 28, 2012 - 1:21 am)

          From the description of the problem it sounds the same. The parts replaced were the same and the ticking noise was the clue to me that there was an issue.

        • Bojidar Spiridonov

          (August 22, 2016 - 2:47 pm)

          Hi my name is Bobby and i have 2010 E63 with the same engine.i have that noise already,did this lawsuit can help me somehow get it fixed?IM already out of warranty

  • Recurring issues with S63?

    (November 21, 2012 - 3:02 am)

    […] Technical Service Bulletins (TSB) Your 2nd question could be related to this lawsuit/recall , Mercedes-Benz Faces Class Action Lawsuits for AMG V8 Engines – AMG Mercedes-Benz News | AMG Mercedes… But at the same time it could be related to other problems. Does the ticking noise go away after […]

  • […] Originally Posted by RobBentley No – its still sat at the local dealer waiting to go back to Mercedes Benz World tomorrow… I'll be moving my insurance from one car to the other later today or tomorrow. The vehicle changes over on the finance tomorrow, which is when I will insure the other one It looks like you may not be out of the woods yet. Apparently Florian Brader and crew have been having too many trips out of the shed in Donny to the pub and not leaving the oven on long enough. AMG engines now seem to be made of butter. Possibly how they make and sell/lease them so cheaply now. Mercedes-Benz Faces Class Action Lawsuits for AMG V8 Engines – AMG Mercedes-Benz News | AMG Mercedes… […]

  • […] very very very tired for the rest of the forum and frankly spoiling it. Enough now, please. FYI Mercedes-Benz Faces Class Action Lawsuits for AMG V8 Engines – AMG Mercedes-Benz News | AMG Mercedes… He could well be as he has a spare parts […]

  • […] Posted by st4 I'm sorry, I didn't put the link in… As if by magic Mercedes-Benz Faces Class Action Lawsuits for AMG V8 Engines – AMG Mercedes-Benz News | AMG Mercedes… The Op can begin his research and gather up some facts to make an informed decision about the […]

  • Carlos Villalobos

    (December 24, 2012 - 1:11 am)

    I read the very interesting article, I have a 03 S55 never had a serious problem.

    Now I am still interested in purchasing a 08 CL63 that I really like. How can I find out if it have this M156 L 6.2 engine that has this mentioned engine problem ?? (VIN # ………. 28 K miles )

    Appreciate your comments.

    Regards, Carlos V

  • […] brief perusal on 'net yielded the following :- Mercedes-Benz Faces Class Action Lawsuits for AMG V8 Engines – AMG Mercedes-Benz News | AMG Mercedes… Mercedes-Benz AMG 6.2 M156 V8 engine facing lawsuit over possible defect |*CarAdvice […]

  • […] a 63, but not a CLS but a C63. Think the CLS edged it engine wise and its the more robust engine. Mercedes-Benz Faces Class Action Lawsuits for AMG V8 Engines – AMG Mercedes-Benz News | AMG Mercedes… No lawsuits over the 55k. __________________ There is no finer car than a C class estate […]

  • james

    (September 24, 2013 - 12:22 pm)

    I have a 2007 e63 which my wife drives and the engine has went bad for no reason. the dealership said the engine would have to be replaced at a cost of 50,000. the car only worth 25,000. My warranty just ran out.It has the same problems as the one in lawsuit. bent rod and jumped time and metal shaving around the cam. the cars are a piece of crap.

  • JP

    (September 13, 2017 - 7:20 pm)

    I have a 2008 cl63 which I purchase about 2 years ago and been having rattling issues on start ups, abc failures, smokey engine leaks frequently which is costing a arm and a leg. Am I covered for repairs under this lawsuit?

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