Mercedes M266 4-cylinder engines from 1.5 to 2.0 liters were produced from 2004 to 2012 and were installed only on the compact A-Class model and the similar B-Class compact MPV. These power units were essentially just an updated version of the popular M166 engines.
R6 Mercedes engines: M102, M111, M166, M254, M260, M264, M266, M270, M271, M274, M282.
|Displacement, cc||1498 (M 266 E 15)
1699 (M 266 E 17)
2034 (M 266 E 20)
|Power output, hp||95 (M 266 E 15)
116 (M 266 E 17)
136 (M 266 E 20)
193 (M 266 E 20 AL)
|Torque output, Nm||140 (M 266 E 15)
155 (M 266 E 17)
185 (M 266 E 20)
280 (M 266 E 20 AL)
|Cylinder block||aluminum R4|
|Block head||aluminum 8v|
|Cylinder bore, mm||83|
|Piston stroke, mm||69.2 (M 266 E 15)
78.5 (M 266 E 17)
94 (M 266 E 20)
9.0 (M 266 E 20 AL)
BorgWarner K03 (M 266 E 20 AL)
|Recommended engine oil||5W-30|
|Engine oil capacity, liter||5.0|
|Euro standards||EURO 4/5|
|Fuel consumption, L/100 km (for Mercedes A170 2008)
|Engine lifespan, km||~300 000|
The engine was installed on:
- Mercedes A-Class W169 in 2004 – 2012;
- Mercedes B-Class W245 in 2005 – 2011.
Disadvantages of the Mercedes M266 engine
- With reliability, this engine is doing great, but it does not tolerate low-quality fuel.
- From bad gasoline, the nozzles and the throttle assembly quickly become dirty here.
- There are a lot of complaints on specialized forums about lubricant leaks and a breakdown of the fuel pump in the tank.
- Another weak point of the motor is the air conditioning compressor clutch and generator.
- Due to the design features, many operations are carried out only with the removal of the engine.