C180 / C200 / C250 CGI 1.8 (M271)
2007–2014 · petrol · 1796cc · 184hp
Engine codes: M271
Reliability, common problems and owner reviews for the Mercedes Benz C-Class W204 C180 / C200 / C250 CGI 1.8 (M271). Check this before you buy used.
The 4-cylinder supercharged/turbo petrol. Decent performance, but the big issue is timing-chain stretch and cam-phaser/guide wear — a rattle on cold start is the warning, and left alone the timing slips. Also some balance-shaft wear. Treat the chain as a known liability.
Same engine, other cars
This is the same physical engine (M271) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
Chain stretches and guides/phasers wear (often after ~100,000 km / 60k miles). Cold-start rattle warns; ignored, the timing slips → damage.
Fix / Workaround: Replace chain + guides + phasers proactively at first rattle.
Repair cost: €700–€1800
Typically appears after: 100,000 km
Supercharged variants add belt/clutch and intake wear points.
Fix / Workaround: Diagnose boost faults; service as needed.
Repair cost: €200–€900
Mileage Thresholds
After 100,000 km: Timing chain stretch risk rises.
Pre-Purchase Checklist
- ☐Cold-start rattle check (timing chain)
- ☐Ask about chain/phaser replacement
- ☐Listen for supercharger noise
Frequently asked questions
Is the Mercedes Benz C-Class W204 C180 / C200 / C250 CGI 1.8 (M271) reliable?
Problematic — The 4-cylinder supercharged/turbo petrol. Decent performance, but the big issue is timing-chain stretch and cam-phaser/guide wear — a rattle on cold start is the warning, and left alone the timing slips. Also some balance-shaft wear. Treat the chain as a known liability.
What are the common problems and reviews for the Mercedes Benz C-Class W204 C180 / C200 / C250 CGI 1.8 (M271)?
The most commonly reported problems: Timing chain stretch / cam phaser wear, Supercharger / boost ancillaries.
Is a used Mercedes Benz C-Class W204 C180 / C200 / C250 CGI 1.8 (M271) worth buying?
Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.