2014 Porsche Cayenne — MOT failures & pass rate
The 2014 Porsche Cayenne passed 88.9% of its 10,543 recorded MOT tests. Large SUVs of a similar age fail 15.0% of the time, so this is 3.9pp better than the group it competes with. Failures cluster in tyres, suspension and lighting & signalling.
What the MOT record shows
No single area dominates — tyres (4.7%) and suspension (3.0%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are coil spring, tread depth and headlamp aim — coil spring alone was recorded 372 times.
A 150k+ example is materially riskier than a 0-30k one: 16.7% versus 9.8%.
The petrol cars hold up better: 8.9% fail against 11.4% for diesel, a 2.5-point gap across 10,134 tests.
Tyres is the most common advisory, noted on 19.2% of tests — work that passed today but is likely due soon.
The trend is worsening — 10.0% of tests failed in 2021 against 11.6% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 4.7% | 492 |
| 2 | Suspension | 3.0% | 313 |
| 3 | Lighting & signalling | 2.6% | 274 |
| 4 | Visibility | 2.6% | 272 |
| 5 | Brakes | 1.6% | 163 |
| 6 | Emissions & environmental | 0.8% | 89 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Coil spring | 372 |
| 2 | Tread depth | 236 |
| 3 | Headlamp aim | 183 |
| 4 | Washers | 162 |
| 5 | Wipers | 153 |
| 6 | Registration plates | 138 |
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 | 19.2% | 2,028 |
| 2 | Brakes | 15.7% | 1,658 |
| 3 | Other defects | 5.8% | 616 |
| 4 | Suspension | 3.9% | 413 |
| 5 | Lighting & signalling | 3.1% | 323 |
| 6 | Visibility | 3.0% | 312 |
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 | 326 | 9.8% |
| 30-60k | 2,572 | 9.2% |
| 60-90k | 4,213 | 11.3% |
| 90-120k | 2,489 | 12.3% |
| 120-150k | 722 | 11.6% |
| 150k+ | 221 | 16.7% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 8,950 | 11.4% |
| Petrol | 1,184 | 8.9% |
| Hybrid | 409 | 11.5% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 2,164 | 10.0% |
| 2022 | 2,085 | 9.4% |
| 2023 | 2,135 | 12.3% |
| 2024 | 2,103 | 12.2% |
| 2025 | 2,056 | 11.6% |
What to check before buying a 2014 Cayenne
The failure pattern for this year is specific enough to inspect against: tyres accounted for 4.7% of tests. Start there.
- Tyres (4.7% 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.
- Suspension (3.0% 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.
- Lighting & signalling (2.6% 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 2014 Porsche Cayennes pass their MOT?
88.9% of the 10,543 2014 Porsche Cayenne MOT tests in this dataset passed — a 11.1% fail rate.
What is the most common MOT failure on a 2014 Porsche Cayenne?
Tyres, recorded in 4.7% of tests, followed by suspension (3.0%).
Does the 2014 Cayenne get worse with mileage?
Its MOT fail rate rises from 9.8% in the 0-30k band to 16.7% in the 150k+ band.
Methodology & source. Based on 10,543 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.