2003 Mini Cooper S — MOT failures & pass rate
Across 989 MOT tests analysed for the 2003 Mini Cooper S, the most common recorded failure areas were lighting & signalling, brakes and suspension. Its pass rate of 71.7% was above the average for superminis of a similar age (70.6%). Higher-mileage examples failed more often — 33.9% in the 150k+ group versus 19.4% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 15.4% | 152 |
| 2 | Brakes | 11.9% | 118 |
| 3 | Suspension | 9.6% | 95 |
| 4 | Body, structure & corrosion | 8.1% | 80 |
| 5 | Emissions & environmental | 6.3% | 62 |
| 6 | Visibility | 6.0% | 59 |
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 | 115 |
| 2 | Rigid brake pipes | 60 |
| 3 | Catalyst emissions | 56 |
| 4 | Pins and bushes | 46 |
| 5 | Joints | 44 |
| 6 | Headlamp | 40 |
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 | 43.0% | 425 |
| 2 | Emissions & environmental | 38.8% | 384 |
| 3 | Suspension | 31.6% | 312 |
| 4 | Tyres | 22.9% | 227 |
| 5 | Lighting & signalling | 21.3% | 211 |
| 6 | Body, structure & corrosion | 17.4% | 172 |
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 | 31 | 19.4% |
| 30-60k | 102 | 22.6% |
| 60-90k | 179 | 26.3% |
| 90-120k | 326 | 30.4% |
| 120-150k | 292 | 29.1% |
| 150k+ | 59 | 33.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 178 | 30.3% |
| 2022 | 205 | 30.7% |
| 2023 | 202 | 26.2% |
| 2024 | 211 | 26.5% |
| 2025 | 193 | 28.0% |
What to check before buying a 2003 Cooper S
Before buying a 2003 Mini Cooper S, focus on the areas it most often fails on. Lighting & signalling accounted for 15.4% of tests for this year.
- Lighting & signalling (15.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (11.9% 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 (9.6% 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 2003 Mini Cooper Ss pass their MOT?
71.7% of the 989 2003 Mini Cooper S MOT tests in this dataset passed — a 28.3% fail rate.
What is the most common MOT failure on a 2003 Mini Cooper S?
Lighting & signalling, recorded in 15.4% of tests, followed by brakes (11.9%).
Does the 2003 Cooper S get worse with mileage?
Its MOT fail rate rises from 19.4% in the 0-30k band to 33.9% in the 150k+ band.
Methodology & source. Based on 989 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.