2013 Porsche Cayman S — MOT failures & pass rate
728 MOT tests on the 2013 Porsche Cayman S are in this dataset, and 94.9% of them passed. Against all cars of a similar age (20.0% fail rate), the 2013 Cayman S comes out 15.0pp better. Failures cluster in tyres, lighting & signalling and visibility.
What the MOT record shows
No single area dominates — tyres (2.5%) and lighting & signalling (1.0%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are tread depth, rigid brake pipes and washers — tread depth alone was recorded 11 times.
Mileage matters less than usual here: the 2013 Cayman S fails 6.0% of the time in the 0-30k band and 4.0% at 60-90k, a spread of only 2.0 points.
Advisories point at the next bill rather than this one: tyres was flagged on 13.7% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 2.5% | 18 |
| 2 | Lighting & signalling | 1.0% | 7 |
| 3 | Visibility | 1.0% | 7 |
| 4 | Brakes | 1.0% | 7 |
| 5 | Suspension | 0.5% | 4 |
| 6 | Emissions & environmental | 0.3% | 2 |
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 | 11 |
| 2 | Rigid brake pipes | 7 |
| 3 | Washers | 5 |
| 4 | Headlamp aim | 3 |
| 5 | Catalyst emissions | 3 |
| 6 | Coil spring | 3 |
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% | 100 |
| 2 | Brakes | 11.7% | 85 |
| 3 | Other defects | 3.2% | 23 |
| 4 | Visibility | 2.5% | 18 |
| 5 | Suspension | 2.3% | 17 |
| 6 | Body, structure & corrosion | 1.5% | 11 |
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 | 199 | 6.0% |
| 30-60k | 361 | 4.2% |
| 60-90k | 149 | 4.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 151 | 6.6% |
| 2022 | 150 | 4.0% |
| 2023 | 142 | 4.2% |
| 2024 | 147 | 4.8% |
| 2025 | 138 | 5.8% |
What to check before buying a 2013 Cayman S
On a 2013 Cayman S, tyres is what the MOT record says goes wrong most — it appeared in 2.5% of tests. Check these areas before you commit.
- Tyres (2.5% 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 (1.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (1.0% 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 2013 Porsche Cayman Ss pass their MOT?
94.9% of the 728 2013 Porsche Cayman S MOT tests in this dataset passed — a 5.1% fail rate.
What is the most common MOT failure on a 2013 Porsche Cayman S?
Tyres, recorded in 2.5% of tests, followed by lighting & signalling (1.0%).
Does the 2013 Cayman S get worse with mileage?
Its MOT fail rate rises from 6.0% in the 0-30k band to 4.0% in the 60-90k band.
Methodology & source. Based on 728 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.