Does the Daihatsu Sirion fail the MOT on tyres more than it should?

The Daihatsu Sirion records 7.40 tyres failure items per 100 initial MOT tests (2019–2024), against 10.64 expected for a car of the same age mix: less than expected for its class and age (−3.24, 95% interval −3.53 to −2.94). It ranks 601 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 Daihatsu Sirion by registration

What exactly fails on tyres?

The most frequent DVSA defect wording in this group on the Daihatsu Sirion is “Tyre tread depth not in accordance with the requirements”, recorded 1,481 times in 2019–2024.

Daihatsu Sirion: most frequent tyres defect wordings, 2019–2024 (30+ items each)
DVSA defect wording	Items	Per 100 tests
Tyre tread depth not in accordance with the requirements	1,481	3.18
A tyre seriously damaged	1,133	2.44
A tyre cords visible or damaged	340	0.73
Tyre obviously under inflated	214	0.46
A tyre valve seriously damaged or misaligned likely to cause sudden deflation of the tyre	89	0.19

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 46,528 (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 Daihatsu Sirion gets a tyres advisory, how often does it fail next time?

8.6% of Daihatsu Sirion MOTs with a tyres advisory were followed by a fail in the same group at the next MOT, typically 12 months and 3,720 miles later (8,176 advisories followed).

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 8,176 (advisories followed) · Method: the same vehicles followed to their next ordinary MOT · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV

Does the Daihatsu Sirion fail the MOT on tyres more than it should?

What exactly fails on tyres?

If a Daihatsu Sirion gets a tyres advisory, how often does it fail next time?

Related pages

Other pages for this model