Mercedes-Benz GLC X254 — Reliability

X254 2022–present 1 engine

Reliability Summary

Engine M270 — 70/100 ACCEPTABLE
Known Issues 3

Engine in this model

ACCEPTABLE 70

M270

1.6/2.0L Turbo I4

Transverse M274. Solid compact MB. Chain lifespan ~130k km.

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Known Issues Across All Engines

Issue Engine Severity Onset
Camshaft actuator / solenoid noise M270 moderate 80,000 km – 150,000 km
Timing chain stretch at ~130k km M270 moderate 100,000 km – 160,000 km
Intake carbon buildup (DI) M270 minor 80,000 km – 150,000 km