Mercedes-Benz C 180 W204 — Reliability

W204 Sedan Mid 2007–2014 2 engines

Reliability Summary

Best engine M271 EVO (CGI turbo) — 58/100 CAUTION
Worst engine M271 Kompressor — 35/100 AVOID
Average reliability 46/100

Engine Comparison

Engine Reliability Score Verdict Known Issues
M271 EVO (CGI turbo)
1.8L CGI Turbo I4 		58/100 CAUTION Camshaft adjuster and tensioner wear — timing drift, chain can jump +2
M271 Kompressor
1.8L Kompressor I4 		35/100 AVOID Single-row timing chain stretch — catastrophic +5

Engines 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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AVOID 35

M271 Kompressor

1.8L Kompressor I4

Supercharged M271. Simplex timing chain stretches and can skip before 100,000 km, plus supercharger ...

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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 —
Single-row timing chain stretch — catastrophic M271 Kompressor critical 60,000 km – 150,000 km
Balance-shaft plastic sprocket wear (pre-2010) M271 Kompressor high —
Supercharger clutch / belt failure M271 Kompressor high 80,000 km – 150,000 km
Valve cover gasket oil leak M271 Kompressor moderate 80,000 km – 150,000 km
Camshaft sensor magnets leak oil into wiring harness and ECU M271 Kompressor moderate —
Part-load crankcase breather hoses crack M271 Kompressor minor —

FAQ

Is the Mercedes-Benz C 180 reliable?

The Mercedes-Benz C 180 has 2 engine options with reliability scores ranging from 35/100 (AVOID) to 58/100 (CAUTION). Average reliability: 46/100.

Which Mercedes-Benz C 180 engine is most reliable?

The M271 EVO (CGI turbo) is the most reliable engine in the Mercedes-Benz C 180, scoring 58/100 (CAUTION).

What problems does the Mercedes-Benz C 180 have?

Across all engine variants, the Mercedes-Benz C 180 has 9 known issues. The most common are related to Camshaft adjuster and tensioner wear — timing drift, chain can jump, Intake-valve carbon build-up (direct injection), Camshaft sensor magnets leak oil into wiring harness and ECU.