Used car guide

2004 SEAT Leon: common problems and MOT failures

What MOT testers find on the SEAT Leon first registered in 2004: we looked at the 4,210 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

4,210MOTs of 2004 cars, done in 2023–2025
61%pass first time (all 2004 cars: 57%)
6,600typical miles a year
2×the usual rate for drive shaft (cv) joints

What goes wrong more than usual on a 2004 SEAT Leon?

Parts flagged at MOT more often on the 2004 SEAT Leon than on all cars registered in 2004.

  • Drive shaft (CV) joints2× usual
    SEAT Leon
    13% All 2004 cars
    6.6%

    Failed outright at MOT: 4%, against 3% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £60–£350 our estimate

    At the viewing: Drive slowly on full steering lock in both directions and listen for clicking. Look for split rubber boots behind the front wheels.

  • Front strut mounts and bushes3.6× usual
    SEAT Leon
    2.9% All 2004 cars
    0.8%

    Failed outright at MOT: 0.4%, against 0.1% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £120–£400 our estimate

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

  • Steering rack2.1× usual
    SEAT Leon
    3.5% All 2004 cars
    1.7%

    Failed outright at MOT: 2.1%, against 1% 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.

  • Door condition4.2× usual
    SEAT Leon
    2.1% All 2004 cars
    0.5%

    Failed outright at MOT: 2.1%, against 0.5% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £150–£1,000 our estimate

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

  • Airbag warning light1.9× usual
    SEAT Leon
    3.2% All 2004 cars
    1.7%

    Failed outright at MOT: 2.7%, against 1.5% 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 while you work the switches: indicators, brake lights, fog lights and reversing lights.

Better than most

Rust around suspension or steering mountings: 0.7% here, against 6.1% of all 2004 cars. Anti-roll bar link joints: 1.2% here, against 4% of all 2004 cars.

Common 2004 SEAT Leon MOT failures and advisories

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

  • Brakes
    44% 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.

  • Suspension
    43% 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
    33% of testsRough price £10–£80

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

  • Tyres
    28% 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.

  • Exhaust and emissions
    20% 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 engine or DPF warning lights.

  • Oil and fluid leaks
    16% 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 SEAT Leon

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

  1. Any recent work on the drive shaft (cv) joints? (Flagged at MOT 2× as often on the 2004 SEAT Leon as on other cars the same age.)
  2. Any recent work on the front strut mounts and bushes? (Flagged at MOT 3.6× as often on the 2004 SEAT Leon as on other cars the same age.)
  3. Any recent work on the steering rack? (Flagged at MOT 2.1× as often on the 2004 SEAT Leon as on other cars the same age.)
  4. Can I see the service history and receipts for any big jobs?

Looking at a SEAT Leon?

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 SEAT Leon compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023–Too new for MOT data
20223,765Tyres 32%
202122,353Tyres 29%
202040,786Tyres 29%
201957,652Tyres 30%
201862,279Tyres 31%
201753,966Tyres 30%
201646,971Tyres 30%
201550,821Tyres 31%
201455,252Tyres 32%
201334,188Tyres 33%
201226,091Suspension 41%
201119,245Suspension 47%
201016,979Suspension 50%
200914,297Suspension 49%
200813,659Suspension 48%
200712,655Suspension 48%
20068,290Suspension 48%
20054,943Suspension 45%
20033,267Suspension 43%
20021,589Suspension 49%
2001757Suspension 47%
2000178Suspension 50%

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