Porsche MOT pass rates and reliability
We have 164,016 MOT tests on Porsche cars from 2023, covering 8 models with enough tests to compare. Choose a model to see what it fails on most often, how its pass rate changes with age and how far it is typically driven.
Across 164,016 MOT tests on Porsche cars in 2023, 86% passed first time, above the national average of 71% for all cars. Of the Porsche models with enough tests, the Macan did best at 92% and the 944 did least well at 75%. Newer models pass more often whatever the make, so compare cars of a similar age.
Porsche models
| Model | Tests | First-time pass rate |
|---|---|---|
| 911 | 49,967 | 88% |
| Boxster | 33,164 | 82% |
| Cayenne | 29,340 | 84% |
| Macan | 26,751 | 92% |
| Cayman | 14,097 | 89% |
| Panamera | 7,009 | 87% |
| 944 | 2,443 | 75% |
| Taycan 4S 93KWH | 1,245 | 89% |
What Porsche cars fail on
Share of tests with at least one failure in each area, across all models, against the figure for all cars.
- Lights and electrics4.6% (all cars 11.3%)
- Tyres3.6% (all cars 6.4%)
- Brakes2.5% (all cars 6.8%)
- Suspension2.3% (all cars 9.0%)
- Exhaust and emissions2.1% (all cars 3.1%)
- Visibility1.7% (all cars 4.8%)
- Body and structure1.2% (all cars 3.5%)
- Number plates and VIN0.5% (all cars 0.4%)
Most common Porsche failure items
Share of tests on which each item was recorded.
- Tread depth: tread depth below requirements of 1.6mm 1.1%
- Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits 1.0%
- Coil spring: fractured or broken 0.9%
- Tyres, condition: has a cut in excess of the requirements deep enough to reach the ply or cords 0.9%
- Position lamp: not working 0.7%
- Rigid brake pipes: excessively corroded 0.6%
- Headlamp aim: too high 0.6%
- Tyres, condition: has ply or cords exposed 0.6%
Check a particular Porsche
Model figures tell you what to look out for. To see one car's own MOT history, mileage and tax, enter its registration.
Source: Department for Transport, Anonymised MOT tests and results, 2023, cars and light vans, normal tests only. Pass rates are first-time passes; a pass after repair at the test station counts as a fail. Contains public sector information licensed under the Open Government Licence v3.0.