Used car guide

2004 Toyota Yaris diesel: common problems and MOT failures

What MOT testers find on the diesel Toyota Yaris first registered in 2004 (diesel cars only): we looked at the 2,774 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

2,774MOTs of 2004 diesel cars, done in 2023–2025
52%pass first time (all 2004 cars: 57%)
6,400typical miles a year
10.5×the usual rate for anti-roll bar link bushes

What goes wrong more than usual on a 2004 Toyota Yaris diesel?

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

  • Anti-roll bar link bushes10.5× usual
    Toyota Yaris
    20% All 2004 cars
    1.9%

    Failed outright at MOT: 5.2%, against 0.5% 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.

  • Rust around suspension or steering mountings2.8× usual
    Toyota Yaris
    16.9% All 2004 cars
    6.1%

    Failed outright at MOT: 7.8%, 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.

  • Headlights1.7× usual
    Toyota Yaris
    22.4% All 2004 cars
    13.2%

    Failed outright at MOT: 6.1%, against 4.9% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £40–£400 our estimate

    At the viewing: Check both headlights on dipped and full beam, and look for cloudy or cracked lenses.

  • Coil springs1.8× usual
    Toyota Yaris
    19.3% All 2004 cars
    10.7%

    Failed outright at MOT: 4.1%, against 2.7% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £175–£400 (pair, one axle) ClickMechanic

    At the viewing: Look behind each wheel for a snapped spring coil, and listen for a clunk or twang when turning the wheel lock to lock with the car stopped.

  • Wheel bearings2.3× usual
    Toyota Yaris
    8.8% All 2004 cars
    3.8%

    Failed outright at MOT: 3.4%, 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.

Better than most

Exhaust system: 2.1% here, against 9.7% of all 2004 cars. Track rod ends: 2.5% here, against 6.5% of all 2004 cars.

Common 2004 Toyota Yaris diesel MOT failures and advisories

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

  • Suspension
    57% 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
    47% 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
    38% 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
    32% 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.

  • Wipers, windscreen and mirrors
    13% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

Questions to ask the seller before buying a 2004 Toyota Yaris 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 anti-roll bar link bushes? (Flagged at MOT 10.5× as often on the 2004 Toyota Yaris diesel as on other cars the same age.)
  2. Any recent work on the rust around suspension or steering mountings? (Flagged at MOT 2.8× as often on the 2004 Toyota Yaris diesel as on other cars the same age.)
  3. Any recent work on the headlights? (Flagged at MOT 1.7× as often on the 2004 Toyota Yaris diesel as on other cars the same age.)
  4. Can I see the service history and receipts for any big jobs?

Looking at a Toyota Yaris?

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 Toyota Yaris compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
20231,199Tyres 12%
202222,993Tyres 20%
202147,677Tyres 22%
202061,611Tyres 21%
201982,989Tyres 26%
201882,903Tyres 27%
201779,864Tyres 27%
201684,554Tyres 28%
201591,481Tyres 29%
201486,278Tyres 29%
201386,046Tyres 30%
201281,787Tyres 29%
201148,171Suspension 30%
201055,604Suspension 35%
200973,384Suspension 35%
200867,114Suspension 44%
200762,625Suspension 43%
200651,516Lights and electrics 47%
200549,444Suspension 48%
200334,635Suspension 51%
200227,079Suspension 54%
200121,226Suspension 58%
200010,634Suspension 60%
19993,208Suspension 60%

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