6 models · 634,494 MOT tests
Porsche reliability
Porsche cars fail 11.7% of first MOT tests (all cars: 28.4%), 56% fewer MOT fails than the average car its age and mileage. The most reliable Porsche on MOT results is the Porsche 911; the least is the Porsche Boxster.
Ranked
Every Porsche model, most reliable first
Ranked against cars of the same age and mileage, so a new model and an old one are judged fairly.
| # | Model | Type | Tests | Fail rate | Verdict |
|---|---|---|---|---|---|
| 1 | Porsche 9111996–2021 cars | Sports car and convertible | 177,861 | 10.4% | Better than average |
| 2 | Porsche Cayman2005–2021 cars | Sports car and convertible | 59,525 | 9.8% | Better than average |
| 3 | Porsche Macan2014–2021 cars | Family SUV | 115,633 | 7.6% | Better than average |
| 4 | Porsche Panamera2009–2021 cars | Luxury car | 31,355 | 10% | Better than average |
| 5 | Porsche Cayenne2003–2021 cars | Large SUV | 123,135 | 13.8% | Better than average |
| 6 | Porsche Boxster1996–2021 cars | Sports car and convertible | 126,985 | 16.4% | Better than average |
Compare across every brand in the UK MOT Reliability Index.
Questions
Porsche reliability questions
Are Porsche cars reliable?
Porsche cars fail 11.7% of first MOT tests, 56% fewer MOT fails than the average car its age and mileage, across 634,494 UK MOT tests from 2022 to 2024.
What is the most reliable Porsche?
On MOT results, the Porsche 911: it fails 10.4% of first tests, 62% fewer MOT fails than the average car its age.
Which Porsche should I avoid?
The Porsche Boxster has the weakest MOT record of the Porsche range (48% fewer MOT fails than the average car its age). Check any used one's MOT history before you buy.
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