Used car guide

2004 Citroen C2 diesel: common problems and MOT failures

What MOT testers find on the diesel Citroen C2 first registered in 2004 (diesel cars only): we looked at the 381 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

Small sample: there were only 381 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.

381MOTs of 2004 diesel cars, done in 2023–2025
51%pass first time (all 2004 cars: 57%)
5,200typical miles a year
2.7×the usual rate for rust around suspension or steering mountings

What goes wrong more than usual on a 2004 Citroen C2 diesel?

Parts flagged at MOT more often on the 2004 Citroen C2 diesel than on all cars registered in 2004.

  • Rust around suspension or steering mountings2.7× usual
    Citroen C2
    16.5% All 2004 cars
    6.1%

    Failed outright at MOT: 11%, against 2.9% of all 2004 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.

  • Side repeaters4.8× usual
    Citroen C2
    9.2% All 2004 cars
    1.9%

    Failed outright at MOT: 5.2%, against 1% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £10–£80 our estimate

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

Common 2004 Citroen C2 diesel MOT failures and advisories

The share of 2004 Citroen C2 diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    53% 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
    43% 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
    41% 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
    40% 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.

  • Rust and bodywork
    16% of testsRough price £150–£1,000

    At the viewing: Check the sills, wheel arches and underneath for rust, and look along the panels for uneven gaps or paint.

  • Oil and fluid leaks
    14% of testsRough price £80–£600

    At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

Questions to ask the seller before buying a 2004 Citroen C2 diesel

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

  1. Any recent work on the rust around suspension or steering mountings? (Flagged at MOT 2.7× as often on the 2004 Citroen C2 diesel as on other cars the same age.)
  2. Any recent work on the side repeaters? (Flagged at MOT 4.8× as often on the 2004 Citroen C2 diesel as on other cars the same age.)
  3. Can I see the service history and receipts for any big jobs?

Looking at a Citroen C2?

Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.

Other years

Every year of the Citroen C2 compared

YearMOT testsMost flagged
2010809Suspension 44%
20096,405Suspension 45%
20085,279Suspension 44%
20075,954Suspension 46%
20065,122Suspension 47%
20055,030Suspension 50%
2003400Suspension 43%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Citroen C2 cars first registered in 2004. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score