2003 MINI One — MOT failures & pass rate
799 MOT tests on the 2003 MINI One are in this dataset, and 68.5% of them passed. That is 2.2 percentage points worse than superminis of a similar age, which fail at 29.4%. Failures cluster in lighting & signalling, brakes and body, structure & corrosion.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 25.2% of tests against 13.5% for the next-worst category.
At component level the recurring items are headlamp aim, position lamp and headlamp — headlamp aim alone was recorded 142 times.
Condition tracks the odometer closely. Failures run at 25.0% in the 30-60k band and 30.9% in the 150k+ band, a 5.9-point spread.
Brakes is the most common advisory, noted on 51.7% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 25.2% | 201 |
| 2 | Brakes | 13.5% | 108 |
| 3 | Body, structure & corrosion | 10.1% | 81 |
| 4 | Suspension | 9.6% | 77 |
| 5 | Visibility | 8.3% | 66 |
| 6 | Tyres | 6.0% | 48 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 142 |
| 2 | Position lamp | 56 |
| 3 | Headlamp | 49 |
| 4 | Rigid brake pipes | 45 |
| 5 | Wipers | 44 |
| 6 | Stop lamp | 44 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 51.7% | 413 |
| 2 | Suspension | 33.7% | 269 |
| 3 | Tyres | 25.2% | 201 |
| 4 | Emissions & environmental | 22.4% | 179 |
| 5 | Lighting & signalling | 20.2% | 161 |
| 6 | Other defects | 14.8% | 118 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 76 | 25.0% |
| 60-90k | 189 | 31.8% |
| 90-120k | 288 | 34.7% |
| 120-150k | 165 | 30.3% |
| 150k+ | 55 | 30.9% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 713 | 32.0% |
| Diesel | 86 | 27.9% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 174 | 30.5% |
| 2022 | 200 | 33.0% |
| 2023 | 165 | 30.3% |
| 2024 | 150 | 32.0% |
| 2025 | 110 | 31.8% |
What to check before buying a 2003 One
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 25.2% of tests. Start there.
- Lighting & signalling (25.2% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (13.5% 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.
- Body, structure & corrosion (10.1% of tests): The one to take seriously on older cars — corrosion to structural areas can be costly and is an MOT failure. Typical repair: £200–£1,500+.
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 2003 MINI Ones pass their MOT?
68.5% of the 799 2003 MINI One MOT tests in this dataset passed — a 31.5% fail rate.
What is the most common MOT failure on a 2003 MINI One?
Lighting & signalling, recorded in 25.2% of tests, followed by brakes (13.5%).
Does the 2003 One get worse with mileage?
Its MOT fail rate rises from 25.0% in the 30-60k band to 30.9% in the 150k+ band.
Methodology & source. Based on 799 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.