Other features include sequential fuel injection, iron coated piston skirts, fracture-split forged steel connecting rods, a one-piece cast camshaft, and a magnesium intake manifold.

Active Cylinder Control variable displacement technology is optional.

Many popular tuners such as Kleemann USA and AMG itself developed supercharger systems for this model, mirroring the later M113 E55 ML design.

Power output varies depending on year and model, from 469 bhp (476 PS; 350 kW) at 6,100 rpm for the E 55 AMG to 574 bhp (582 PS; 428 kW) in the 2004–2006 CLK DTM AMG, with 700 to 800 N⋅m (516 to 590 lb⋅ft) of torque at 2,750–4,000 rpm.

Applications: The M155 is a version of the supercharged 5.4 L (5,439 cc) M113 specifically for the Mercedes-Benz SLR McLaren.