Does the Mazda Demio fail the MOT on lamps, reflectors and electrics more than it should?
The Mazda Demio records 29.59 lamps, reflectors and electrics failure items per 100 initial MOT tests (2019–2024), against 38.44 expected for a car of the same age mix: less than expected for its class and age (−8.85, 95% interval −10.31 to −7.39). It ranks 593 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 Mazda Demio by registration
What exactly fails on lamps, reflectors and electrics?
The most frequent DVSA defect wording in this group on the Mazda Demio is “Headlamp reflector or lens slightly defective”, recorded 315 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Headlamp reflector or lens slightly defective | 315 | 4.55 |
| The aim of a headlamp is not within limits laid down in the requirements | 304 | 4.39 |
| A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 233 | 3.37 |
| A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED | 191 | 2.76 |
| A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources | 146 | 2.11 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 6,922 (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
Other pages for this model
Mazda Demio 2002 · Mazda Demio 2003 · Mazda Demio in the Netherlands · Mazda Demio by postcode area · Mazda Demio body, chassis and structure failures · Mazda Demio brakes failures · Mazda Demio vehicle identification failures · Mazda Demio noise, emissions and leaks failures · Mazda Demio seat belts and airbags failures · Mazda Demio steering failures · Mazda Demio suspension failures · Mazda Demio tyres failures · Mazda Demio visibility failures