The M156 displaces and shares very little with other Mercedes-Benz engine families like the
M155. The
bore spacing, block design, and other features are unique to the AMG engine. Although this engine displaces 6.2 litres, it is marketed as the "6.3" to commemorate Mercedes' famed 6.3 L
M100 engine, its first production V8. The engine uses a
bore and
stroke of . When introduced in the 2007
CLK 63 AMG, output was at 6,800 rpm with of
torque at 5,200 rpm. For the 2007 CLS 63 and E 63, output was at 6,800 rpm with of torque at 5,200 rpm. The 2007 ML 63 had , and the 2008 C 63 had . The final 2013–2015 C 63 AMG
Edition 507 had . The engine, however, has been uprated to produce and of torque in the late S 63, E 63, SL 63 & CL 63 models . Applications: • 2006–2010
E 63 AMG • 2006–2011
ML 63 AMG • 2007
R 63 AMG • 2006–2010
S 63 AMG • 2006–2011
CL 63 AMG • 2006–2010
CLK 63 AMG • 2006–2010
CLS 63 AMG • 2007–2015
C 63 AMG • 2008–2011
SL 63 AMG • 2013
Lucra LC470 R M156 lawsuit In 2011, a class action lawsuit was filed in United States District Court in New Jersey against Daimler AG, Mercedes-Benz, Mercedes-AMG for alleged defects in the M156 engine contained in AMG vehicles built in 2007–2011
model years leading to premature wear. The plaintiff claimed the combination of cast nodular iron
camshafts and 9310 grade steel
valve lifters contributed to the premature wear, but the defendants had known about the defect since 2007. The lawsuit lasted approximately 14-months. In November, 2012, litigation came to a halt when the New Jersey District Court dismissed the plaintiffs’ first amended complaint for lack of standing. The plaintiffs were given the opportunity to further amend their complaint to show that they had standing to sue, but plaintiffs made no further filings with the Court. On January 7, 2013, the Court signed an order closing the case. ==M156 common issues==