Mercedes-Benz M166 engine

Mercedes-Benz M166
Overview
ManufacturerMercedes-Benz
Production1997 – 2005
Layout
ConfigurationInline-four engine
Displacement
  • 1.4 L (1,397 cc)
  • 1.6 L (1,598 cc)
  • 1.9 L (1,898 cc)
  • 2.1 L (2,084 cc)
Cylinder bore
  • 80 mm (3.15 in) (M166 E14, E16)
  • 84 mm (3.31 in) (M166 E19, E21)
Piston stroke
  • 69.5 mm (2.74 in) (1.4 L engines)
  • 79.5 mm (3.13 in) (1.6 L engines)
  • 85.6 mm (3.37 in) (1.9 L engines)
  • 94 mm (3.70 in) (2.1 L engines)
Cylinder block materialAluminium alloy
Cylinder head materialAluminium alloy
ValvetrainSOHC 2 valves x cyl.
Compression ratio
  • 11:1
  • 10.8:1 (1.9 L engines)
Combustion
Fuel systemMultipoint injection
Fuel typeGasoline
Cooling systemWater cooled
Output
Power output60–103 kW (82–140 PS; 80–138 hp)
Torque output130–205 N⋅m (96–151 lb⋅ft)
Chronology
SuccessorMercedes-Benz M266 engine

The M166 is a range of inline-four engines produced by Mercedes-Benz from 1997 to 2005, before it was succeeded by the M266 engine from 2004.