It's an absolute beast of an engine. Generating some 525 horsepower in its current form, Mercedes-Benz's M156 6.2-liter V8, developed built by AMG has transformed some of the brand's regular offerings into pavement eating road warriors. Cars such as the C63 and E63 AMG have become modern legends thanks to the incredible performance offered by this monster motor.
However for all it's rip snorting ability and melodious sound, the 6.2 has recently come under flack in New Jersey, as a class-action lawsuit has been filed in the Garden State's District Court.
The suit centers around premature wear on the engine's internal components, particularly on the nodular cast-iron camshafts and 9310-grade steel valves. Plaintiffs complain that due to inadequate heat treating of components and incorrect offsets, engine failure is a common problem with the 6.2. To make matters worse, plaintiffs cite the fact that Mercedes and AMG have known about these issues since 2007 when the automaker issued a technical service bulletin to deal with the problem.
At present no actual trial date has been set, nor has any information been released regarding the number of 6.2-liter V8s 'affected' by this problem. Still, it will be interesting to see what further developments arise in this case and if a recall is issued covering Mercedes models powered by these 'defective' engines. For more information on the lawsuit, click on the link below:
More: Mercedes Benz Facing Class Action Lawsuit For AMG V8 Defects