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.
Verdict and scores are editorial opinions based on aggregated data. Learn about our methodology. Not a substitute for professional inspection.