2019 Porsche 718 Cayman Gt4 — MOT failures & pass rate
Across 321 MOT tests analysed for the 2019 Porsche 718 Cayman Gt4, the most common recorded failure areas were tyres, other defects and lighting & signalling. Its pass rate of 97.5% was above the average for cars of a similar age (89.7%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 1.3% | 4 |
| 2 | Other defects | 1.3% | 4 |
| 3 | Lighting & signalling | 0.6% | 2 |
| 4 | Seat belts & restraints | 0.3% | 1 |
| 5 | Visibility | 0.3% | 1 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Registration plates | 6 |
| 2 | Tread depth | 5 |
| 3 | Headlamp aim | 3 |
| 4 | SRS malfunction indicator lamp | 1 |
| 5 | Washers | 1 |
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 | 6.9% | 22 |
| 2 | Other defects | 2.2% | 7 |
| 3 | Emissions & environmental | 0.6% | 2 |
| 4 | Visibility | 0.6% | 2 |
| 5 | Brakes | 0.6% | 2 |
| 6 | Body, structure & corrosion | 0.3% | 1 |
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 | 309 | 1.6% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2022 | 68 | 2.9% |
| 2023 | 82 | 1.2% |
| 2024 | 87 | 3.5% |
| 2025 | 84 | 2.4% |
What to check before buying a 2019 718 Cayman Gt4
Before buying a 2019 Porsche 718 Cayman Gt4, focus on the areas it most often fails on. Tyres accounted for 1.3% of tests for this year.
- Tyres (1.3% 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.
- Other defects (1.3% of tests): Miscellaneous items not in the main categories. Typical repair: varies.
- Lighting & signalling (0.6% 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 2019 Porsche 718 Cayman Gt4s pass their MOT?
97.5% of the 321 2019 Porsche 718 Cayman Gt4 MOT tests in this dataset passed — a 2.5% fail rate.
What is the most common MOT failure on a 2019 Porsche 718 Cayman Gt4?
Tyres, recorded in 1.3% of tests, followed by other defects (1.3%).
Methodology & source. Based on 321 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.