2004 Toyota Dyna — MOT failures & pass rate
468 MOT tests on the 2004 Toyota Dyna are in this dataset, and 72.7% of them passed. That is effectively the same as all cars of a similar age (27.7% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 17.7% of tests against 13.7% for the next-worst category.
At component level the recurring items are stop lamp, rbt (sp) and service brake performance — stop lamp alone was recorded 31 times.
Condition tracks the odometer closely. Failures run at 24.6% in the 60-90k band and 29.5% in the 150k+ band, a 4.9-point spread.
Suspension is the most common advisory, noted on 29.9% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 29.2% in 2021 to 21.6% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 17.7% | 83 |
| 2 | Brakes | 13.7% | 64 |
| 3 | Suspension | 11.3% | 53 |
| 4 | Body, structure & corrosion | 7.9% | 37 |
| 5 | Visibility | 6.6% | 31 |
| 6 | Tyres | 4.9% | 23 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Stop lamp | 31 |
| 2 | Rbt (sp) | 30 |
| 3 | Service brake performance | 28 |
| 4 | Rear fog lamp | 28 |
| 5 | Shock absorbers | 27 |
| 6 | Position lamp | 26 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 29.9% | 140 |
| 2 | Tyres | 27.4% | 128 |
| 3 | Brakes | 27.1% | 127 |
| 4 | Body, structure & corrosion | 19.9% | 93 |
| 5 | Lighting & signalling | 19.4% | 91 |
| 6 | Visibility | 19.0% | 89 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 60-90k | 69 | 24.6% |
| 90-120k | 125 | 26.4% |
| 120-150k | 106 | 29.3% |
| 150k+ | 139 | 29.5% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 113 | 29.2% |
| 2022 | 99 | 24.2% |
| 2023 | 82 | 26.8% |
| 2024 | 100 | 33.0% |
| 2025 | 74 | 21.6% |
What to check before buying a 2004 Dyna
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 17.7% of tests. Start there.
- Lighting & signalling (17.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (13.7% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
- Suspension (11.3% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2004 Toyota Dynas pass their MOT?
72.7% of the 468 2004 Toyota Dyna MOT tests in this dataset passed — a 27.4% fail rate.
What is the most common MOT failure on a 2004 Toyota Dyna?
Lighting & signalling, recorded in 17.7% of tests, followed by brakes (13.7%).
Does the 2004 Dyna get worse with mileage?
Its MOT fail rate rises from 24.6% in the 60-90k band to 29.5% in the 150k+ band.
Methodology & source. Based on 468 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.