Only since 2016 has the company assembled the 2.0-liter Mercedes OM654 diesel engine, which stands out for having an aluminum cylinder block with Nanoslide cast iron plasma spraying. The transverse arrangement OM654q, an updated OM654M modification, and a 1.6-liter modification are all available.
The diesel R4-family comprises OM616, OM601, OM604, OM611, OM640, OM646, OM651, OM654, and OM668.
Specifications
| Production years | since 2016 |
| Displacement, cc | 1597 (DE 16 G SCR) 1950 (DE 20 G SCR) 1950 (q DE 20 SCR) 1993 (M DE 20 G SCR) |
| Fuel system | Common Rail |
| Power output, hp | 122, 160 (DE 16 G SCR) 150, 194, 245 (DE 20 G SCR) 116 – 190 (q DE 20 SCR) 163 – 265 (M DE 20 G SCR) |
| Torque output, Nm | 300, 360 (DE 16 G SCR) 360, 400, 500 (DE 20 G SCR) 280 – 400 (q DE 20 SCR) 380 – 550 (M DE 20 G SCR) |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 78 (DE 16 G SCR) 82 (DE 20 G SCR) 82 (q DE 20 SCR) 82 (M DE 20 G SCR) |
| Piston stroke, mm | 83.6 (DE 16 G SCR) 92.3 (DE 20 G SCR) 92.3 (q DE 20 SCR) 94 (M DE 20 G SCR) |
| Compression ratio | 15.5 |
| Features | AdBlue |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | Garrett GTD1449VZ (DE 16 G SCR) Garrett GTD1449VZ / BorgWarner R2S for 245 hp version (DE 20 G SCR) Garrett GTD1449VZ (q DE 20 SCR) BorgWarner R2S (M DE 20 G SCR) |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.5 |
| Fuel type | diesel |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for MB E 220 d 2017) — city — highway — combined |
6.5 4.7 5.4 |
| Engine lifespan, km | ~240 000 |
| Weight, kg | 168.4 |
The engine was installed on:
- Mercedes A-Class W177 since 2018;
- Mercedes B-Class W247 since 2018;
- Mercedes C-Class W205 in 2018 – 2021; C-Class W206 since 2021;
- Mercedes CLA-Class C118 since 2019;
- Mercedes CLS-Class C257 since 2018;
- Mercedes GLA-Class H247 since 2020;
- Mercedes GLB-Class X247 since 2019;
- Mercedes GLC-Class X253 since 2019;
- Mercedes GLE-Class V167 since 2018;
- Mercedes E-Class W213 since 2016;
- Mercedes V-Class W447 since 2019.
Disadvantages of the OM654 engine
The limited supply of rockers is a well-known weakness of this diesel unit.
You will need to replace the hydraulic lifters and camshaft if you overlook this issue.
Bad fuel is completely intolerable to the Bosch CP4 fuel system with piezo injectors.
Soot quickly overgrows intake channels in the cylinder head and valves, even from poor diesel fuel.
Environmental bells and whistles like particulate filters, SCRs, and EGRs cause a lot of problems as usual.