The 5.5-liter bi-turbo Mercedes M157 engine was produced in Germany from 2010 to 2019 and installed on AMG modifications of the CLS-Class, E-Class, ML-Class, GL-Class and S-Class models. There is an atmospheric version of the engine with a cylinder deactivation system and the M152 index.
|Fuel system||direct injection CGI|
|Power output, hp||525 – 585|
|Torque output, Nm||700 – 900|
|Cylinder block||aluminum V8|
|Block head||aluminum 32v|
|Cylinder bore, mm||98|
|Piston stroke, mm||90.5|
|Phase regulator||on all shafts|
|Turbocharging||two Garrett MGT2260MSL|
|Recommended engine oil||0W-40|
|Engine oil capacity, liter||8.5|
|Euro standards||EURO 5|
|Fuel consumption, L/100 km (for Mercedes-Benz GL63 AMG 2014)
|Engine lifespan, km||~250 000|
The engine was installed on:
- Mercedes CL-Class C216 in 2010 – 2014; CL-Class C217 in 2014 – 2017;
- Mercedes CLS-Class W218 in 2011 – 2018;
- Mercedes E-Class W212 in 2011 – 2016;
- Mercedes G-Class W463 in 2012 – 2018;
- Mercedes GL-Class X166 in 2012 – 2019;
- Mercedes GLE-Class W166 in 2015 – 2018;
- Mercedes ML-Class W166 in 2012 – 2015;
- Mercedes S-Class W221 in 2010 – 2013; S-Class W222 in 2013 – 2017;
- Mercedes SL-Class R231 in 2012 – 2018.
Disadvantages of the M157 DE55 engine
- This unit is often tuned and its resource depends on the degree of forcing.
- Like almost all aluminum coated motors, it is prone to scuffing.
- Also often the catalyst for this problem is the wear of the oil pump gear.
- A lot of trouble here is caused by a short-lived timing chain and especially tensioners.
- The weak points of the engine include rather delicate piezoceramic nozzles.