2012 Porsche Boxster — MOT failures & pass rate
The 2012 Porsche Boxster passed 92.2% of its 5,694 recorded MOT tests. That is 8.5 percentage points better than coupes & convertibles of a similar age, which fail at 16.3%. Failures cluster in suspension, tyres and lighting & signalling.
What the MOT record shows
No single area dominates — suspension (3.1%) and tyres (2.3%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are ball joint, headlamp aim and tread depth — ball joint alone was recorded 136 times.
Condition tracks the odometer closely. Failures run at 5.4% in the 0-30k band and 15.6% in the 90-120k band, a 10.2-point spread — more than double.
Tyres is the most common advisory, noted on 14.8% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 3.1% | 176 |
| 2 | Tyres | 2.3% | 131 |
| 3 | Lighting & signalling | 2.3% | 131 |
| 4 | Brakes | 1.2% | 67 |
| 5 | Visibility | 1.0% | 56 |
| 6 | Emissions & environmental | 0.4% | 20 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Ball joint | 136 |
| 2 | Headlamp aim | 86 |
| 3 | Tread depth | 82 |
| 4 | Rigid brake pipes | 79 |
| 5 | Coil spring | 70 |
| 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 | Tyres | 14.8% | 840 |
| 2 | Brakes | 12.6% | 716 |
| 3 | Suspension | 5.9% | 333 |
| 4 | Other defects | 2.6% | 151 |
| 5 | Visibility | 2.1% | 118 |
| 6 | Body, structure & corrosion | 1.7% | 97 |
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 | 1,427 | 5.4% |
| 30-60k | 3,005 | 7.1% |
| 60-90k | 1,020 | 10.9% |
| 90-120k | 205 | 15.6% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,141 | 7.6% |
| 2022 | 1,132 | 6.6% |
| 2023 | 1,148 | 8.9% |
| 2024 | 1,145 | 8.0% |
| 2025 | 1,128 | 7.8% |
What to check before buying a 2012 Boxster
The failure pattern for this year is specific enough to inspect against: suspension accounted for 3.1% of tests. Start there.
- Suspension (3.1% 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 (2.3% 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.
- Lighting & signalling (2.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
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 Porsche Boxsters pass their MOT?
92.2% of the 5,694 2012 Porsche Boxster MOT tests in this dataset passed — a 7.8% fail rate.
What is the most common MOT failure on a 2012 Porsche Boxster?
Suspension, recorded in 3.1% of tests, followed by tyres (2.3%).
Does the 2012 Boxster get worse with mileage?
Its MOT fail rate rises from 5.4% in the 0-30k band to 15.6% in the 90-120k band.
Methodology & source. Based on 5,694 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.