OM651 (late)
Mercedes-Benz · 2.1L Diesel I4
2014–2020
"Post-2014: updated injectors + pump. Much improved. Highway excellent."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 2
DPF blockage — city driving concern
▸DPF warning light, limp mode, forced regeneration
Post-2014 OM651 is reliable but still a diesel. DPF needs highway driving to regenerate.
Athens city use will cause DPF issues. If primarily city driving in Greece: choose petrol M274 instead.
EGR valve fouling (post-2014)
▸Rough idle, smoke, reduced power
Even post-2014 OM651 has standard EGR fouling. Better than pre-2014 but not immune.
Regular highway driving helps. EGR clean or replacement at 120k+ km typical.
Models with OM651 (late) 10
Other Mercedes-Benz Engines
Tuning Potential
Moderate
Frequently Asked Questions
Is the Mercedes-Benz OM651 (late) reliable?
The Mercedes-Benz OM651 (late) scores 72/100 with a verdict of ACCEPTABLE. It has 2 documented issues with total repair costs between €800 and €2,200.
What are the common problems with the OM651 (late)?
The most common issues are:
- DPF blockage — city driving concern — high, repair cost €500–€1,500, 60,000 km–120,000 km
- EGR valve fouling (post-2014) — moderate, repair cost €300–€700, 80,000 km–150,000 km
What cars use the Mercedes-Benz OM651 (late)?
The OM651 (late) is found in:
- A 180d (2014–2018)
- B 180d (2014–2018)
- C 200d (2014–2018)
- C 220d (2014–2018)
- C 220d Wagon (2014–2021)
- E 200d (2009–2016)
- E 220d (2009–2016)
- GLA 200d (2013–2020)
- GLC 220d (2015–2022)
- GLC 250d Coupe (2016–2019)
How much does it cost to repair the OM651 (late)?
Total potential repair costs for all 2 known issues range from €800 to €2,200. The most expensive issue is typically .
What years was the OM651 (late) produced?
The Mercedes-Benz OM651 (late) was produced from 2014 to 2020. It is a 2143cc I4 diesel engine.
Verdict and scores are editorial opinions based on aggregated data. Learn about our methodology. Not a substitute for professional inspection.