IsItAGoodCar

Common Problems with the
2005–2012 Mercedes-Benz A-Class (W169)

We've identified 3 known issues that can affect the 2005–2012 Mercedes-Benz A-Class (W169). 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
1
Moderate
0
Minor

All Known Issues

CVT / clutch actuator wear

SeriousGearbox & Transmission

Automatic W169s can suffer worn clutch actuators or CVT issues.

Most affected: CVT-equipped models

Estimated cost: £600–£2,200Affects: 2005–2012

Typical symptoms

  • •Judder pulling away
  • •Gear indicator faults

What to inspect before you buy

  • ✓Repeated low-speed manoeuvres
  • ✓Hot restart behaviour

Timing chain stretch and tensioner wear

SeriousEngine

Petrol M266 engines can suffer from timing chain stretch and tensioner failure, leading to a rattling noise on cold start. If left unchecked, the chain can jump and cause catastrophic engine damage.

Most affected: A 150, A 170, A 200

Estimated cost: £500–£1,200Affects: 2005–2012Often appears around: 60,000–100,000 miles

Typical symptoms

  • •Rattling noise on cold start
  • •Engine management light
  • •Rough idle

What to inspect before you buy

  • ✓Listen for chain rattle on cold start
  • ✓Check service history for oil change intervals

Injector seal and fuel system faults

ModerateEngine

Diesel CDI models can develop leaking injector seals, leading to the "black death" — a build-up of carbon and fuel residue around the injectors that can damage wiring and the cylinder head.

Most affected: A 160 CDI, A 180 CDI, A 200 CDI

Estimated cost: £200–£800Affects: 2005–2012Often appears around: 60,000–100,000 miles

Typical symptoms

  • •Rough idle
  • •Increased fuel consumption
  • •Fuel smell from engine bay

What to inspect before you buy

  • ✓Inspect around injectors for carbon build-up
  • ✓Check for rough running at idle
  • ✓Ask about injector seal replacement history

Buying Tips for the 2005 Mercedes-Benz A-Class (W169)

  • ✓CVT and clutch-actuated autos should feel tidy in stop-start driving.
  • ✓Look underneath for rear axle corrosion.
  • ✓On diesels, check injector-seal history.

Browse 2005–2012 Mercedes-Benz A-Class (W169) in our Directory

View MOT history, registration data, and reliability scores for 2005–2012 Mercedes-Benz A-Class (W169) vehicles.

View 2005–2012 Directory

Other Mercedes-Benz A-Class (W169) Year Periods

2005–2012

Looking at a specific 2005 Mercedes-Benz A-Class (W169)?

Enter the registration number to check its full MOT history, outstanding finance, write-off status, and more.

Free Vehicle Check