2014 Porsche Boxster — MOT failures & pass rate
6,335 MOT tests on the 2014 Porsche Boxster are in this dataset, and 93.9% of them passed. That is 7.1 percentage points better than coupes & convertibles of a similar age, which fail at 13.2%. Failures cluster in tyres, lighting & signalling and visibility.
What the MOT record shows
No single area dominates — tyres (2.6%) and lighting & signalling (1.8%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are tread depth, headlamp aim and rigid brake pipes — tread depth alone was recorded 92 times.
Condition tracks the odometer closely. Failures run at 3.5% in the 0-30k band and 12.7% in the 90-120k band, a 9.2-point spread — more than double.
Tyres is the most common advisory, noted on 13.7% of tests — work that passed today but is likely due soon.
The trend is worsening — 5.4% of tests failed in 2021 against 7.3% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 2.6% | 165 |
| 2 | Lighting & signalling | 1.8% | 113 |
| 3 | Visibility | 1.2% | 75 |
| 4 | Suspension | 1.0% | 66 |
| 5 | Brakes | 1.0% | 61 |
| 6 | Other defects | 0.4% | 23 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Tread depth | 92 |
| 2 | Headlamp aim | 82 |
| 3 | Rigid brake pipes | 49 |
| 4 | Washers | 44 |
| 5 | Wipers | 38 |
| 6 | Registration plates | 35 |
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 | 13.7% | 866 |
| 2 | Brakes | 10.1% | 637 |
| 3 | Suspension | 2.9% | 182 |
| 4 | Other defects | 2.6% | 164 |
| 5 | Visibility | 2.2% | 141 |
| 6 | Body, structure & corrosion | 1.4% | 90 |
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 | 2,355 | 3.5% |
| 30-60k | 3,097 | 6.8% |
| 60-90k | 800 | 10.6% |
| 90-120k | 71 | 12.7% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,269 | 5.4% |
| 2022 | 1,273 | 4.6% |
| 2023 | 1,285 | 6.9% |
| 2024 | 1,241 | 6.5% |
| 2025 | 1,267 | 7.3% |
What to check before buying a 2014 Boxster
The failure pattern for this year is specific enough to inspect against: tyres accounted for 2.6% of tests. Start there.
- Tyres (2.6% 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 (1.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (1.2% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£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 2014 Porsche Boxsters pass their MOT?
93.9% of the 6,335 2014 Porsche Boxster MOT tests in this dataset passed — a 6.1% fail rate.
What is the most common MOT failure on a 2014 Porsche Boxster?
Tyres, recorded in 2.6% of tests, followed by lighting & signalling (1.8%).
Does the 2014 Boxster get worse with mileage?
Its MOT fail rate rises from 3.5% in the 0-30k band to 12.7% in the 90-120k band.
Methodology & source. Based on 6,335 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.