Mercedes-Benz M275 engine

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The Mercedes-Benz M275 (and similar M285) engine is a 3-valve per cylinder V12 automobile piston engine family used in the 2000s.


The M275 is a 3 valve per cylinder 5.5 L (5513 cc) twin turbocharged and intercooled version. Bore is 82 mm and stroke is 87 mm. Output is 500 hp (373 kW) at 5000 rpm with 590 ft.lbf (800 Nm) of torque at 1800-3500 rpm. Single over head cam engine with two banks.


M275 AMG

The M275 AMG is a 3 valve per cylinder 6.0 L (5980 cm³) version, also twin turbocharged, reaching 22.1 psi (1.52bar) at maximum, and is air-to-liquid intercooled. Bore is 82.6 mm and stroke is 93 mm. Output is 604 hp (450 kW) at 4800-5100 rpm with 738 ft·lbf (1000 N·m) of torque at 2000-4000 rpm. Uses ECI ignition system, with 12 spark plugs per one pack. Two spark plugs per cylinder, helps with combustion and to support Ionic current measurement function sequence.



The M285 is a 5.5 L (5513 cc) version built in Stuttgart, Germany. Bore is 82 mm and stroke is 87 mm. Output is 550 hp (410 kW) at 5250 rpm with 664 ft.lbf (900 Nm) of torque at 2300-3000 rpm. It has an aluminum engine block and aluminum SOHC cylinder heads. The cylinders are lined with silicon/aluminum. It uses SFI fuel injection, has 3 valves per cylinder with twin turbochargers and intercoolers, twin-spark ignition, and features fracture-split forged steel connecting rods.


See also