Porsche Carrera 4 vs Porsche Cayenne: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Porsche Carrera 4
79%
MOT pass rate · 68 vehicles
Porsche Cayenne
84%
MOT pass rate · 40,483 vehicles
More reliable
Verdict: On MOT pass rate, the Porsche Cayenne is the more reliable of the two — 84% pass first time versus 79%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Porsche Carrera 4 | Porsche Cayenne |
|---|---|---|
| MOT pass rate | 79% | 84% ✓ |
| MOT failure rate | 21% | 16% ✓ |
| Faults & advisories per test | 1.5 | 1.2 ✓ |
| Dangerous-fault share | 1% ✓ | 3% |
| Average mileage | 97,174 mi | 87,610 mi |
| Sample size (vehicles) | 68 | 40,483 |
Most common faults
Porsche Carrera 4
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))
- Offside Front Brake pipe slightly corroded (3.6.B.2c)
- Nearside Front Brake pipe slightly corroded (3.6.B.2c)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
Porsche Cayenne
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
Reliability FAQ
On MOT pass rate, the Porsche Cayenne is the more reliable of the two — 84% pass first time versus 79%. It's one signal among several; check the full breakdown below.
Full Porsche Carrera 4 report Full Porsche Cayenne report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.