2005 Mini One — MOT failures & pass rate
Across 1,383 MOT tests analysed for the 2005 Mini One, the most common recorded failure areas were lighting & signalling, brakes and suspension. Its pass rate of 69.1% was below the average for superminis of a similar age (71.1%). Higher-mileage examples failed more often — 37.5% in the 150k+ group versus 10.5% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 16.3% | 225 |
| 2 | Brakes | 13.8% | 191 |
| 3 | Suspension | 13.0% | 180 |
| 4 | Body, structure & corrosion | 8.9% | 123 |
| 5 | Visibility | 6.5% | 90 |
| 6 | Steering | 5.8% | 80 |
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 | 117 |
| 2 | Rigid brake pipes | 116 |
| 3 | Pins and bushes | 100 |
| 4 | Position lamp | 77 |
| 5 | Service brake performance | 73 |
| 6 | Track rod end | 68 |
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 | 49.8% | 688 |
| 2 | Emissions & environmental | 34.2% | 473 |
| 3 | Suspension | 33.0% | 457 |
| 4 | Tyres | 29.1% | 403 |
| 5 | Lighting & signalling | 23.2% | 321 |
| 6 | Steering | 14.5% | 200 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 38 | 10.5% |
| 30-60k | 125 | 23.2% |
| 60-90k | 344 | 30.5% |
| 90-120k | 596 | 31.2% |
| 120-150k | 240 | 36.7% |
| 150k+ | 40 | 37.5% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 1,322 | 31.3% |
| Diesel | 61 | 21.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 262 | 31.7% |
| 2022 | 322 | 33.9% |
| 2023 | 266 | 30.4% |
| 2024 | 285 | 28.4% |
| 2025 | 248 | 29.4% |
What to check before buying a 2005 One
Before buying a 2005 Mini One, focus on the areas it most often fails on. Lighting & signalling accounted for 16.3% of tests for this year.
- Lighting & signalling (16.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (13.8% 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 (13.0% 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 2005 Mini Ones pass their MOT?
69.1% of the 1,383 2005 Mini One MOT tests in this dataset passed — a 30.9% fail rate.
What is the most common MOT failure on a 2005 Mini One?
Lighting & signalling, recorded in 16.3% of tests, followed by brakes (13.8%).
Does the 2005 One get worse with mileage?
Its MOT fail rate rises from 10.5% in the 0-30k band to 37.5% in the 150k+ band.
Methodology & source. Based on 1,383 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.