Used car guide

2004 Kia Sorento diesel: common problems and MOT failures

What MOT testers find on the diesel Kia Sorento first registered in 2004 (diesel cars only): we looked at the 1,591 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

1,591MOTs of 2004 diesel cars, done in 2023–2025
49%pass first time (all 2004 cars: 57%)
6,000typical miles a year
4.3×the usual rate for chassis rust or damage

What goes wrong more than usual on a 2004 Kia Sorento diesel?

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

  • Chassis rust or damage4.3× usual
    Kia Sorento
    15% All 2004 cars
    3.5%

    Failed outright at MOT: 7%, against 1.1% 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.

  • Wheel bearings3.4× usual
    Kia Sorento
    13% All 2004 cars
    3.8%

    Failed outright at MOT: 5.4%, against 1.4% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £120–£300 (one bearing) ClickMechanic

    At the viewing: Listen for a hum or growl that changes as you steer at speed.

  • Body structure rust or damage3.6× usual
    Kia Sorento
    10.7% All 2004 cars
    3%

    Failed outright at MOT: 4.5%, against 0.9% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £150–£1,000 our estimate

    At the viewing: Look underneath and along the sills for flaky rust or fresh underseal hiding it.

  • Brake pads2× usual
    Kia Sorento
    14.8% All 2004 cars
    7.5%

    Failed outright at MOT: 3.4%, against 1.9% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £75–£175 (one axle) ClickMechanic

    At the viewing: Listen for squealing or grinding when braking, and look through the wheel at how much pad is left.

  • Anti-roll bar bushes and joints4.6× usual
    Kia Sorento
    7.9% All 2004 cars
    1.7%

    Failed outright at MOT: 1.9%, against 0.4% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £100–£280 (pair of drop links) Checkatrade

    At the viewing: Drive slowly over bumps and listen for a knock or rattle from the front. Worn anti-roll bar links are a cheap fix.

Better than most

Suspension arm bushes and joints: 2.8% here, against 9.3% of all 2004 cars. Drive shaft (CV) joints: 2.6% here, against 6.6% of all 2004 cars.

Common 2004 Kia Sorento diesel MOT failures and advisories

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

  • Brakes
    51% 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
    49% 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.

  • Rust and bodywork
    28% 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.

  • Tyres
    27% 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.

  • Oil and fluid leaks
    15% 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 Kia Sorento 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 chassis rust or damage? (Flagged at MOT 4.3× as often on the 2004 Kia Sorento diesel as on other cars the same age.)
  2. Any recent work on the wheel bearings? (Flagged at MOT 3.4× as often on the 2004 Kia Sorento diesel as on other cars the same age.)
  3. Any recent work on the body structure rust or damage? (Flagged at MOT 3.6× as often on the 2004 Kia Sorento diesel as on other cars the same age.)
  4. Can I see the service history and receipts for any big jobs?

Looking at a Kia Sorento?

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 Kia Sorento compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023380Tyres 13%
20222,317Tyres 21%
20214,774Tyres 22%
20203,510Tyres 25%
20198,154Tyres 28%
20188,128Tyres 28%
20179,237Tyres 29%
20169,310Tyres 30%
201511,816Tyres 30%
20148,609Suspension 35%
20136,278Suspension 40%
20125,595Suspension 48%
20114,756Suspension 52%
20105,419Suspension 54%
20093,743Brakes 47%
20082,705Suspension 51%
20073,618Suspension 49%
20065,307Suspension 50%
20052,879Suspension 48%
2003526Suspension 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 Kia Sorento cars first registered in 2004. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score