IsItAGoodCar
Reliability Guide

Common Problems with the
2007 Mercedes-Benz C-Class (W203)

The final W203 year before the W204 replacement. Late cars benefit from all accumulated fixes but rust protection was still not as good as later models. The M272 balance shaft issue was not fully resolved until after W203 production ended.

What changed for 2007

  • •Final production year
  • •All known fixes applied
  • •Last year of W203

Common MOT watch-outs

  • !Rust on arches, sills and bootlid
  • !M272 balance shaft gears
  • !SAM module electrical faults
2
Known Issues
2
Serious
0
Moderate
0
Minor

The 2007 period has 1 more issue than the Mercedes-Benz C-Class (W203) average across all year periods.

All Known Issues

M271 timing chain stretch

SeriousEngine

The 1.8 Kompressor petrol engine uses a timing chain that stretches over time, causing rattling on cold start. In severe cases the chain can jump, destroying the engine.

Most affected: C 180 Kompressor, C 200 Kompressor, C 230 Kompressor

Estimated cost: £500–£1,500Affects: 2000–2007Often appears around: 60,000–100,000 miles

Typical symptoms

  • •Rattling noise on cold start
  • •Engine management light
  • •Loss of power

What to inspect before you buy

  • ✓Listen for chain rattle from cold
  • ✓Check engine oil change history
  • ✓Ask if the chain has been replaced

Rust on arches, sills and bootlid

SeriousBodywork & Rust

W203s are notorious for corrosion around the wheel arches, sills and bootlid edges. Structural corrosion on sills and subframe mounting areas is an MOT failure.

Estimated cost: £300–£2,000+Affects: 2000–2007Often appears around: Age-related

Typical symptoms

  • •Bubbling paint around arches
  • •Crusty sills
  • •MOT corrosion advisories

What to inspect before you buy

  • ✓Inspect front and rear arches
  • ✓Check sills and jacking points
  • ✓Look under bootlid edges for rust

Buying Tips for the 2007 Mercedes-Benz C-Class (W203)

  • ✓Late facelift cars are the safest bets
  • ✓Check M272 engine number against affected range
  • ✓SAM module condition matters
2006 Mercedes-Benz C-Class (W203)

Browse 2007 Mercedes-Benz C-Class (W203) in our Directory

View MOT history, registration data, and reliability scores for 2007 Mercedes-Benz C-Class (W203) vehicles.

View 2007 Directory

Other Mercedes-Benz C-Class (W203) Year Periods

20002001–20032004200520062007

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