IsItAGoodCar

Common Problems with the
2009–2012 Mercedes-Benz E-Class (W212)

We've identified 3 known issues that can affect the 2009–2012 Mercedes-Benz E-Class (W212). 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
1
Moderate
0
Minor

The 2009–2012 period has 1 more issue than the Mercedes-Benz E-Class (W212) average across all year periods.

All Known Issues

Rear Subframe Corrosion

SeriousSuspension & Chassis

Like the W204, the rear subframe can corrode badly enough to fail an MOT and require full replacement.

Most affected: Saloon, Estate, Coupe

Estimated cost: £0 (Goodwill) – £1,800Affects: 2009–2016Often appears around: Age-related rather than mileage-related

Typical symptoms

  • •Heavy corrosion advisories
  • •Visible rust on suspension mounting points

What to inspect before you buy

  • ✓Request a Mercedes subframe inspection
  • ✓Check MOT history for corrosion notes
  • ✓Inspect around rear suspension mounts

Airmatic Air Suspension Leaks

SeriousSuspension & Chassis

Higher-spec cars with air suspension can sag or throw warnings once bags and compressors age.

Most affected: Models with Airmatic

Estimated cost: £800–£2,000Affects: 2009–2016Often appears around: 70k-140k miles

Typical symptoms

  • •One corner sits low
  • •Suspension warning
  • •Compressor running often

What to inspect before you buy

  • ✓Leave the car parked before viewing if possible
  • ✓Listen for compressor noise
  • ✓Check for recent air-suspension work

OM651 Diesel Chain Tensioner Oil Leak

ModerateEngine

The gasket on the timing chain tensioner is a frequent source of oil leaks. This can lead to decreased oil pressure for the tensioner, causing chain rattle.

Most affected: E 200 CDI, E 220 CDI, E 250 CDI, E 300 Hybrid

Estimated cost: £200–£500Affects: 2009–2016Often appears around: 50,000–100,000 miles

Typical symptoms

  • •Oil leak on the side of the engine block
  • •Rattle from the engine when starting from cold

What to inspect before you buy

  • ✓Inspect the side of the engine for oil leaks
  • ✓Listen for timing chain noise

Buying Tips for the 2009 Mercedes-Benz E-Class (W212)

  • ✓Ask for proof of a rear-subframe inspection or replacement because Mercedes has offered goodwill on many cars.
  • ✓Diesels should be scanned for NOx and AdBlue faults even if the engine light is off.
  • ✓Check all COMAND and parking electronics because large executive cars often carry expensive option packs.
2013–2016 Mercedes-Benz E-Class (W212)

Browse 2009–2012 Mercedes-Benz E-Class (W212) in our Directory

View MOT history, registration data, and reliability scores for 2009–2012 Mercedes-Benz E-Class (W212) vehicles.

View 2009–2012 Directory

Other Mercedes-Benz E-Class (W212) Year Periods

2009–20122013–2016

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