2006 Citroen C4 petrol: common problems and MOT failures

What goes wrong more than usual on a 2006 Citroen C4 petrol?

Parts flagged at MOT more often on the 2006 Citroen C4 petrol than on all cars registered in 2006.

• Brake discs1.8× usual
  Citroen C4

  26.2% All 2006 cars

  14.2%

  Failed outright at MOT: 2.3%, against 1.1% of all 2006 cars. The rest were advisories or minor defects.

  Rough price £150–£350 our estimate

  At the viewing: Look through the wheel at the brake disc: a deep lip at the edge or heavy scoring means they're worn. Feel for judder when braking.

• Steering rack inner joints3.8× usual
  Citroen C4

  14.6% All 2006 cars

  3.8%

  Failed outright at MOT: 0%, against 0% of all 2006 cars. The rest were advisories or minor defects.

  Rough price £100–£450 our estimate

  At the viewing: On a straight road the steering wheel should sit straight. Listen for knocks when turning, and check the steering feels even.

• Brake lights2.4× usual
  Citroen C4

  14.1% All 2006 cars

  5.8%

  Failed outright at MOT: 11.6%, against 4.7% of all 2006 cars. The rest were advisories or minor defects.

  Rough price £10–£80 our estimate

  At the viewing: Ask a friend to check every light while you work the switches: indicators, brake lights, fog lights and reversing lights.

• Individual direction indicators3× usual
  Citroen C4

  11.1% All 2006 cars

  3.7%

  Failed outright at MOT: 5.3%, against 1.7% of all 2006 cars. The rest were advisories or minor defects.

  Rough price £10–£80 our estimate

  At the viewing: Ask a friend to check every light while you work the switches: indicators, brake lights, fog lights and reversing lights.

• Exhaust system1.7× usual
  Citroen C4

  15.6% All 2006 cars

  9.2%

  Failed outright at MOT: 3.5%, against 2.6% of all 2006 cars. The rest were advisories or minor defects.

  Rough price £100–£500 (pipe or section) ClickMechanic

  At the viewing: Listen for blowing or rattling from underneath at idle, and look for black soot around joints.

Common 2006 Citroen C4 petrol MOT failures and advisories

The share of 2006 Citroen C4 petrol MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

• Suspension
  46% of testsRough price £120–£400

  At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

• Lights and electrics
  45% of testsRough price £10–£80

  At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

• Brakes
  40% of testsRough price £150–£350

  At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

• Tyres
  35% of testsRough price £70–£150

  At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

• Steering
  17% of testsRough price £100–£450

  At the viewing: On a straight road the steering wheel should sit straight. Feel for play or knocking when turning.

• Exhaust and emissions
  16% of testsRough price £100–£1,200

  At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for an engine warning light.

Known faults on the 2006 Citroen C4 petrol

Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.

• Fire, brake and airbag recalls

  All engines

  There were five recalls, including a short circuit fire risk, possible loss of braking efficiency and front airbags that might not deploy properly.

  At the viewing: Run the free DVSA recall check on the reg and ask for proof the work was done.

  Source: What Car?: Citroen C4 (2005-2010) reliability

• Cruise control and limiter glitches

  All engines

  Electrical glitches have affected the speed limiter and cruise control, and the radio can lose its stations.

  At the viewing: Try the cruise control and speed limiter on the test drive.

  Source: What Car?: Citroen C4 (2005-2010) reliability

Questions to ask the seller before buying a 2006 Citroen C4 petrol

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

1. Has all the recall work been done?
2. Any recent work on the brake discs? (Flagged at MOT 1.8× as often on the 2006 Citroen C4 petrol as on other cars the same age.)
3. Any recent work on the steering rack inner joints? (Flagged at MOT 3.8× as often on the 2006 Citroen C4 petrol as on other cars the same age.)
4. Any recent work on the brake lights? (Flagged at MOT 2.4× as often on the 2006 Citroen C4 petrol as on other cars the same age.)
5. Can I see the service history and receipts for any big jobs?