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Mercedes-Benz Sued over AMG V8 Engine Failures

Mercedes Benz’ naturally aspirated M156 6.2-liter V8, the beast behind the carmaker’s infamous “63 AMG” models and the SLS supercar, which is gradually being replaced by the new 5.5-liter twin-turbo V8, is a piece of engineering genius.
This engine has it all: muscle, linear power delivery, the soundtrack and others. However, it seems that there might be one or two cracks in this story. The 6.2-liter V8 is now being shot at from New Jersey, where a class-action lawsuit has been filed in the Garden State’s District Court, as Benz Boost reports.

It seems that the engine’s internals tend to wear prematurely, with the most common problems being related to the nodular cast-iron camshafts and 9310-grade steel valves. To be more specific, multiple cases of engine failure have been registered, with the causes allegedly being inadequate thermal treatment of the components, as well as incorrect offsets.

And the story doesn’t end here, one of the statements in the lawsuits includes the idea that Mercedes has been aware of these problems since 2007, when the carmaker tried to solve the issue by releasing a service bulletin related to this.

It is currently unclear how many units of the V8 are affected by this or if the result of the lawsuit will be a recall of not. Issues like this could seriously affect the carmaker's image, so we are looking forward to seeing what the outcome of the story will be.
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About the author: Andrei Tutu
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In his quest to bring you the most impressive automotive creations, Andrei relies on learning as a superpower. There's quite a bit of room in the garage that is this aficionado's heart, so factory-condition classics and widebody contraptions with turbos poking through the hood can peacefully coexist.
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