MOT fail rates
Porsche MOT fail rates by model
4 Porsche models, each at its most tested age, against all cars of that age. From 537,916 DVSA MOT tests taken 2022 to 2025. Open a model for every age, its most common fail items and other models at the same age.
MOT data updated
| Model | Age | MOT fail rate | Tests (n) | All cars | Difference |
|---|---|---|---|---|---|
| Porsche 911 | 19 years | 16.0% | 10,748 | 43.2% | −27.2 pts |
| Porsche Boxster | 20 years | 24.4% | 10,237 | 42.8% | −18.4 pts |
| Porsche Cayenne | 6 years | 11.3% | 9,863 | 17.8% | −6.5 pts |
| Porsche Macan | 6 years | 7.8% | 18,321 | 17.8% | −10.0 pts |
Read this with care. A fail rate is not a measure of build quality. How far cars are driven, how they are used and how well owners maintain them all change it, and wear items such as tyres and brake pads are common fails. Compare a model only with cars of the same age. Methodology and limits.
Source
Contains public sector information licensed under the Open Government Licence v3.0. Source: DVSA anonymised MOT test data, class 4 normal MOT tests, 2022 to 2025. MOT data updated 22 September 2026.
Not affiliated with or endorsed by DVSA. How we calculate these figures · Data sources