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
Related Guides
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 (2014–2020)
- 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.
Scores are calculated from documented issues, repair costs, and failure patterns across thousands of owner reports and technical sources. Learn about our methodology. Always inspect before you buy.