Smart Roadster W452 — Reliability

W452 Convertible City 2003–2006 1 engine

Reliability Summary

Engine M160/M160E — 46/100 AVOID
Known Issues 7

Engine in this model

AVOID 46

M160/M160E

0.6-0.7 Turbo

Mercedes' tiny three-cylinder turbo (599 cc, 698 cc from 2003) in the Smart City Coupe/Fortwo 450 an...

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Known Issues Across All Engines

Issue Engine Severity Onset
Head gasket failure M160/M160E critical 60,000 km – 120,000 km
Turbocharger and exhaust manifold failure M160/M160E high —
Clutch actuator failure (automated gearbox) M160/M160E high —
Overheating (rear-mount cooling) M160/M160E high 40,000 km – 90,000 km
Oil consumption and oil leaks - burnt valves if neglected M160/M160E moderate —
Timing chain wear M160/M160E moderate 50,000 km – 80,000 km
ECU / immobilizer fault M160/M160E moderate 60,000 km – 130,000 km