The 4.0-liter twin-turbo V8 engine of the Mercedes M177 has been assembled in Germany only since 2015 and is installed on AMG versions of such models as the C-Class, E-Class, S-Class, G-Class, and GLS-Class. In addition to the standard one, there is a hybrid modification with an electric motor producing 22 hp and 250 Nm.
The V8-family includes: M113 E43, M113 E50, M113 E55, M119 E42, M119 E50, M119 E60, M156, M157, M177, M273, M278.
Specifications M177DE40AL
| Production years | since 2015 |
| Displacement, cc | 3982 |
| Fuel system | direct injection |
| Power output, hp | 476 – 639 |
| Torque output, Nm | 650 – 900 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 83 |
| Piston stroke, mm | 92 |
| Compression ratio | 10.5 (version LS2 – 8.6) |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | on all shafts |
| Turbocharging | two BorgWarner B03G |
| Recommended engine oil | 0W-40 |
| Engine oil capacity, liter | 9.0 |
| Fuel type | petrol |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for Mercedes C63 AMG 2017) — city — highway — combined |
11.0 6.9 8.4 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 209 |
The engine was installed on:
- Aston Martin DB11 1 (AM5) in 2016 – 2023;
- Aston Martin DB12 1 (AM5) since 2023;
- Aston Martin DBX 1 (AM8) since 2020;
- Aston Martin Vantage 3 (AM6) since 2018;
- Mercedes AMG GT X290 since 2018;
- Mercedes C-Class W205 in 2015 – 2023;
- Mercedes E-Class W213 in 2017 – 2023;
- Mercedes G-Class W463 since 2018;
- Mercedes GLC-Class X253 in 2017 – 2022;
- Mercedes GLE-Class W167 since 2020;
- Mercedes GLS-Class X167 since 2020;
- Mercedes S-Class W222 in 2017 – 2020;
- Mercedes SL-Class R232 since 2021.
Disadvantages of the Mercedes M177 engine
- First of all, this engine does not like tuning very much; its connecting rods cannot withstand;
- However, in stock it has a good service life and with proper maintenance it does not bother you;
- Even the Nanoslide coating instead of cast iron sleeves serves without any special problems;
- It is important to use only high-quality fuel or the injectors will quickly fail;
- Some owners experienced oil pump failure on runs up to 100,000 km;
- Also on specialized forums they often complain about leaks and low service life of spark plugs and ignition coils;
- A recall campaign was carried out to replace the turbine oil pipeline and drain plug.
