Smart ForTwo W450 — Reliability

W450 2000–2007 1 engine

Reliability Summary

Engine OM660 0.8 CDI — 55/100 CAUTION
Known Issues 2

Engine in this model

CAUTION 55

OM660 0.8 CDI

OM660 0.8 CDI

ForTwo 450/451. Smallest production diesel. Turbo failure on 54hp version. DPF on 451. EGR. Quirky b...

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Known Issues Across All Engines

Issue Engine Severity Onset
DPF (451 model) OM660 0.8 CDI high 40,000 km – 80,000 km
Turbo failure (54hp CDI) OM660 0.8 CDI high 60,000 km – 120,000 km