Mercedes-Benz M256 engine

Mercedes-Benz M256
Overview
ManufacturerMercedes-Benz
Production2017–present
Layout
ConfigurationStraight-six
Displacement2.5 L (2,498 cc)
3.0 L (2,999 cc)
Cylinder bore83 mm
Piston stroke77 mm, 92.4 mm
Cylinder block materialAluminium alloy
Cylinder head materialAluminium alloy
ValvetrainDOHC 4 valves x cyl
Compression ratio10.5:1
Combustion
SuperchargerBorgWarner eBooster
TurbochargerSingle-turbo twin-scroll
Fuel systemDirect injection
Fuel typePetrol
Cooling systemWater cooled
Output
Power output270–320 kW (367–435 PS)
Torque output500–520 N⋅m (369–384 lb⋅ft)
Chronology
PredecessorMercedes-Benz M276

The Mercedes-Benz M256 engine is a turbocharged straight-six engine produced since 2017, when it was first introduced on the W222 S 450.[1] It replaces the previous M276 V6 engine,[2] and is Mercedes' first straight-six engine since the M104 engine.[3]

  1. ^ "2018 Mercedes-Benz S500 European-Spec First Drive: Ice, Ice Baby. Too Cool, Too Cool". MotorTrend. 19 July 2017. Retrieved 2018-07-03.
  2. ^ "Mercedes To Phase Out V6 Engines In Favor Of Straight-Sixes". Motor1.com. Retrieved 2018-07-03.
  3. ^ "Mercedes-Benz M256 inline 6-cylinder gasoline engine - MarkLines Automotive Industry Portal".