Does the Seat Mii fail the MOT on lamps, reflectors and electrics more than it should?

The Seat Mii records 4.49 lamps, reflectors and electrics failure items per 100 initial MOT tests (2019–2024), against 8.75 expected for a car of the same age mix: less than expected for its class and age (−4.26, 95% interval −4.44 to −4.07). It ranks 502 of 729 models on lamps, reflectors and electrics (1 = most failures above expected).

Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on lamps, reflectors and electrics · check a Seat Mii by registration

What exactly fails on lamps, reflectors and electrics?

The most frequent DVSA defect wording in this group on the Seat Mii is “A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning”, recorded 998 times in 2019–2024.

Seat Mii: most frequent lamps, reflectors and electrics defect wordings, 2019–2024 (30+ items each)
DVSA defect wording	Items	Per 100 tests
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning	998	1.01
The aim of a headlamp is not within limits laid down in the requirements	906	0.91
A rear registration plate lamp or light source missing or inoperative in the case of a single lamp or all lamps	572	0.58
A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED	412	0.42
A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning	190	0.19

Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 99,179 (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

Does the Seat Mii fail the MOT on lamps, reflectors and electrics more than it should?

What exactly fails on lamps, reflectors and electrics?

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