Porsche reliability: MOT results 2024
Figures updated
Ranked 4 of 52 makes
143,496 Porsche cars aged 3 to 20 had an MOT in 2024, and 11.9% failed first time (UK average 28.5%). Allowing for age and mileage, a Porsche is 53% less likely to fail than the average car of the same age and mileage. At their first MOT, 7.1% failed (UK 12.7%).
Porsche models ranked
| Model | Score | Fail rate | First MOT | Tests |
|---|---|---|---|---|
| Porsche 911 | 261 | 10.0% | 5.5% | 34,721 |
| Porsche Cayman | 224 | 11.5% | 4.6% | 14,248 |
| Porsche Boxster | 216 | 13.8% | 4.0% | 22,735 |
| Porsche Macan | 202 | 9.3% | 6.2% | 29,076 |
| Porsche Panamera | 198 | 12.9% | 11.5% | 6,927 |
| Porsche Cayenne | 184 | 15.9% | 6.1% | 29,142 |
| Porsche Taycan | 127 | 9.5% | 9.8% | 5,279 |
Porsche MOT failure rate by age
What Porsche cars fail on
| Area | Tests failing | vs similar cars |
|---|---|---|
| Tyres | 3.9% | ▼ 30% less often |
| Lights and electrics | 3.2% | ▼ 65% less often |
| Brakes | 1.9% | ▼ 68% less often |
| Suspension | 1.8% | ▼ 75% less often |
| Exhaust and emissions | 1.5% | ▼ 43% less often |
| Visibility | 1.4% | ▼ 69% less often |
| Body and structure | 1.0% | ▼ 67% less often |
| Seat belts and airbags | 0.3% | ▼ 60% less often |
| Steering | 0.3% | ▼ 79% less often |
| Wheels | 0.2% | ▼ 36% less often |
Most common Porsche MOT faults
- Condition: has a cut in excess of the requirements deep enough to reach the ply or cords1.2% of tests
- Tread depth: tread depth below requirements of 1.6mm1.1% of tests
- Coil spring: fractured or broken0.9% of tests
- Condition: has ply or cords exposed0.9% of tests
- Headlamp aim: too high0.7% of tests
- Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits0.7% of tests
Frequently asked questions
›Are Porsche cars reliable?
By MOT results, Porsche ranks 4 of 52 makes in 2024, with a reliability score of 212 (100 is average for the same age and mileage). 11.9% of Porsche cars failed their MOT first time.
›What is the most reliable Porsche?
The Porsche 911, with a score of 261. The lowest-scoring is the Taycan (127).
›What do Porsche cars fail their MOT on?
Tyres: 3.9% of Porsche MOTs failed on it, 0.7 times the rate for similar cars. The single most common fault was “Condition: has a cut in excess of the requirements deep enough to reach the ply or cords”.
Source: DVSA anonymised MOT tests 2024, Open Government Licence v3.0. How we calculate the league.