Does the Porsche 911 fail the MOT on tyres more than it should?
The Porsche 911 records 3.73 tyres failure items per 100 initial MOT tests (2019–2024), against 8.54 expected for a car of the same age mix: less than expected for its class and age (−4.81, 95% interval −4.92 to −4.70). It ranks 688 of 751 models on tyres (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on tyres · check a Porsche 911 by registration
What exactly fails on tyres?
The most frequent DVSA defect wording in this group on the Porsche 911 is “Tyre tread depth not in accordance with the requirements”, recorded 3,769 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Tyre tread depth not in accordance with the requirements | 3,769 | 1.32 |
| A tyre seriously damaged | 3,433 | 1.20 |
| A tyre cords visible or damaged | 2,533 | 0.89 |
| A tyre valve seriously damaged or misaligned likely to cause sudden deflation of the tyre | 171 | 0.06 |
| Tyre obviously under inflated | 166 | 0.06 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 285,717 (initial tests) · Method: failure items (major and minor) grouped by DVSA's defect tree; wordings with 30+ items · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
If a Porsche 911 gets a tyres advisory, how often does it fail next time?
6.2% of Porsche 911 MOTs with a tyres advisory were followed by a fail in the same group at the next MOT, typically 12.2 months and 1,929 miles later (29,188 advisories followed).
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 29,188 (advisories followed) · Method: the same vehicles followed to their next ordinary MOT · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
Other pages for this model
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