Smart ForTwo W453 — Reliability

W453 2015–2017 1 engine

Reliability Summary

Engine H4D (1.0 SCe, Mercedes M281) — 80/100 BUY
Known Issues 5

Engine in this model

BUY 80

H4D (1.0 SCe, Mercedes M281)

1.0 SCe NA I3

Renault's simple 1.0 three-cylinder without a turbo (H4D, called M281 by Mercedes): Smart Fortwo/For...

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Known Issues Across All Engines

Issue Engine Severity Onset
Thermostat failure H4D (1.0 SCe, Mercedes M281) moderate 50,000 km – 100,000 km
Oil consumption and leaks after about 100,000 km H4D (1.0 SCe, Mercedes M281) minor 100,000 km
Lambda sensor and sensor faults - engine stutters H4D (1.0 SCe, Mercedes M281) minor —
Ignition coil failure H4D (1.0 SCe, Mercedes M281) minor 40,000 km – 80,000 km
Engine mount vibration H4D (1.0 SCe, Mercedes M281) minor 60,000 km – 120,000 km