Since 2018, Mercedes M264 engines with 1.5 and 2.0 liter volumes have been assembled at a German factory and fitted to numerous longitudinal engine models, including the C-Class and E-Class. The transverse version of this unit has the M260 index and has cast iron sleeves.
M102, M111, M133, M139, M166, M200, M254, M260, M264, M266, M270, M271, M274, and M282 are the R4 Mercedes engines.
Specifications
| Production years | since 2018 |
| Displacement, cc | 1497 (M 264 E15 DEH LA) 1991 (M 264 E20 DEH LA) |
| Fuel system | direct injection |
| Power output, hp | 156 – 184 (M 264 E15 DEH LA) 197 – 299 (M 264 E20 DEH LA) |
| Torque output, Nm | 250 – 280 (M 264 E15 DEH LA) 320 – 400 (M 264 E20 DEH LA) |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 80.4 (M 264 E15 DEH LA) 83 (M 264 E20 DEH LA) |
| Piston stroke, mm | 73.7 (M 264 E15 DEH LA) 92 (M 264 E20 DEH LA) |
| Compression ratio | 10.5 |
| Features | BSG 48V |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | Camtronic |
| Turbocharging | IHI AL0086 (M 264 E15 DEH LA) MHI TD04L6W (M 264 E20 DEH LA) |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.6 |
| Fuel type | petrol |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for Mercedes-Benz C200 2019) — city — highway — combined |
9.3 5.5 6.9 |
| Engine lifespan, km | ~260 000 |
| Weight, kg | 135 |
The engine was installed on:
- Mercedes C-Class W205 in 2018 – 2021;
- Mercedes CLS-Class C257 since 2018;
- Mercedes E-Class W213 since 2018;
- Mercedes GLC-Class X253 since 2019.
Disadvantages of the Mercedes M264 engine
Low-octane gasoline detonation has already resulted in cases of piston damage.
A few instances of extremely costly Camtronic system repairs are reported even on specialized forums.
Engine speed varies and carbon deposits build up on the intake valves due to the direct injection flaw.
BSG 48V glitches have also been the subject of multiple complaints; it is discharged and refuses to be charged.