2012 MINI John Cooper Works — MOT failures & pass rate
The 2012 MINI John Cooper Works passed 86.0% of its 1,576 recorded MOT tests. That is 8.7 percentage points better than superminis of a similar age, which fail at 22.7%. Failures cluster in lighting & signalling, suspension and tyres.
What the MOT record shows
Lighting & signalling dominates the failure mix at 8.8% of all tests — 4.7 points clear of suspension, so it is the first thing to check.
At component level the recurring items are position lamp, headlamp aim and catalyst emissions — position lamp alone was recorded 72 times.
Mileage is the strongest signal on the record: 7.7% of 0-30k cars fail, rising to 14.9% once past 120-150k.
Advisories point at the next bill rather than this one: tyres was flagged on 18.3% of tests without failing them.
The trend is worsening — 13.3% of tests failed in 2021 against 15.7% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 8.8% | 139 |
| 2 | Suspension | 4.1% | 65 |
| 3 | Tyres | 3.9% | 62 |
| 4 | Visibility | 3.0% | 47 |
| 5 | Emissions & environmental | 2.8% | 44 |
| 6 | Brakes | 2.0% | 31 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Position lamp | 72 |
| 2 | Headlamp aim | 57 |
| 3 | Catalyst emissions | 34 |
| 4 | Wipers | 30 |
| 5 | Shock absorbers | 29 |
| 6 | Tread depth | 27 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 18.3% | 288 |
| 2 | Brakes | 18.3% | 288 |
| 3 | Suspension | 14.6% | 230 |
| 4 | Lighting & signalling | 6.7% | 105 |
| 5 | Emissions & environmental | 5.6% | 88 |
| 6 | Other defects | 5.0% | 78 |
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 | 78 | 7.7% |
| 30-60k | 589 | 12.7% |
| 60-90k | 675 | 15.1% |
| 90-120k | 187 | 16.0% |
| 120-150k | 47 | 14.9% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 1,545 | 13.8% |
| Diesel | 31 | 22.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 309 | 13.3% |
| 2022 | 313 | 12.5% |
| 2023 | 309 | 10.4% |
| 2024 | 327 | 17.7% |
| 2025 | 318 | 15.7% |
What to check before buying a 2012 John Cooper Works
On a 2012 John Cooper Works, lighting & signalling is what the MOT record says goes wrong most — it appeared in 8.8% of tests. Check these areas before you commit.
- Lighting & signalling (8.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (4.1% 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.
- Tyres (3.9% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
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 2012 MINI John Cooper Workss pass their MOT?
86.0% of the 1,576 2012 MINI John Cooper Works MOT tests in this dataset passed — a 14.0% fail rate.
What is the most common MOT failure on a 2012 MINI John Cooper Works?
Lighting & signalling, recorded in 8.8% of tests, followed by suspension (4.1%).
Does the 2012 John Cooper Works get worse with mileage?
Its MOT fail rate rises from 7.7% in the 0-30k band to 14.9% in the 120-150k band.
Methodology & source. Based on 1,576 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.