Mercedes-Benz C-Class W204 — Reliability

W204 2009–2012 1 engine

Reliability Summary

Engine M271 EVO (CGI turbo) — 58/100 CAUTION
Known Issues 3

Engine in this model

CAUTION 58

M271 EVO (CGI turbo)

1.8L CGI Turbo I4

Turbo CGI successor to the Kompressor. Toothed chain fixed the stretch problem, but camshaft adjuste...

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Known Issues Across All Engines

Issue Engine Severity Onset
Camshaft adjuster and tensioner wear — timing drift, chain can jump M271 EVO (CGI turbo) critical 50,000 km – 160,000 km
Intake-valve carbon build-up (direct injection) M271 EVO (CGI turbo) moderate 80,000 km – 130,000 km
Camshaft sensor magnets leak oil into wiring harness and ECU M271 EVO (CGI turbo) moderate —