OM660 0.8 CDI
Smart · OM660 0.8 CDI
2000–2014
"ForTwo 450/451. Smallest production diesel. Turbo failure on 54hp version. DPF on 451. EGR. Quirky but fragile. Specialist Smart workshops only."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 2
DPF (451 model)
▸DPF warning
DPF on 0.8L diesel = city driving nightmare.
DPF 0.8 diesel στην Αθήνα = εφιάλτης.
Turbo failure (54hp CDI)
▸Smoke, loss of power
Tiny turbo on tiny diesel.
Turbo μικρό diesel — €400-1,000.
Models with OM660 0.8 CDI 2
Other Smart Engines
Tuning Potential
70hp Stage 1
Frequently Asked Questions
Is the Smart OM660 0.8 CDI reliable?
The Smart OM660 0.8 CDI scores 55/100 with a verdict of CAUTION. It has 2 documented issues with total repair costs between €700 and €2,000.
What are the common problems with the OM660 0.8 CDI?
The most common issues are:
- DPF (451 model) — high, repair cost €300–€1,000, 40,000 km–80,000 km
- Turbo failure (54hp CDI) — high, repair cost €400–€1,000, 60,000 km–120,000 km
What cars use the Smart OM660 0.8 CDI?
How much does it cost to repair the OM660 0.8 CDI?
Total potential repair costs for all 2 known issues range from €700 to €2,000. The most expensive issue is typically .
What years was the OM660 0.8 CDI produced?
The Smart OM660 0.8 CDI was produced from 2000 to 2014. It is a 799cc I3 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.