Mazda 5 2005: MOT failure rate for its age
55.8% of 2,454 MOT tests of the Mazda 5 first registered in 2005 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 100.8 (95% CI 95.5–106.1; 100 = normal for this model at that age): the 2005 build year is no different from other years of the same model at the same age. This is a rough estimate from a smaller sample.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Failed first time | 55.8 | % | all ages tested | 2019–2024 | 2454 |
| Index against this model at the same age (95% CI 95.5–106.1) | 100.8 | index | 100 = normal for this model at that age | 2019–2024 | 2454 |
| Rank among this model's 11 build years | 8 | of 11 | 1 = fails least for its age | 2019–2024 | 2454 |
| Tested in 2024 | 167 | tests | median 117,449 miles | 2024 | 167 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2005 Mazda 5 fail at each age?
Cars built in 2005 were tested at ages 14 to 19 between 2019 and 2024. Each row compares their first-time failure share with what this model normally shows at that age, after allowing for the overall failure level of each test year.
| Age | Tests | Failed, % | 95% interval | Normal for this model at that age, % | Index (100 = normal) |
|---|---|---|---|---|---|
| 14 | 794 | 57.2 | 53.7–60.6 | 58.4 | 97.9 |
| 15 | 611 | 56 | 52–59.9 | 54 | 103.7 |
| 16 | 475 (rough estimate) | 57.1 | 52.6–61.4 | 54.9 | 104 |
| 17 | 336 (rough estimate) | 51.8 | 46.5–57.1 | 52.5 | 98.7 |
| 18 | 238 (rough estimate) | 54.2 | 47.9–60.4 | 54 | 100.3 |
| 19 | 167 (rough estimate) | 56.9 | 49.3–64.2 | not available | not available |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,621 (initial tests) · Method: normal rate = this model's first-time failure share at that age across its build years (cells of 400+ tests), adjusted for each test year's overall level; cells of 30+ tests, under 500 marked rough · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
What fails most on the 2005 Mazda 5?
The most common failure group on cars built in 2005 is suspension: 63.1 items per 100 first tests, against 46.1 across all build years of the Mazda 5. These counts are not age-adjusted: cars built in 2005 were tested at ages 14 to 19.
| Failure group | Built 2005, per 100 | All build years, per 100 | Items |
|---|---|---|---|
| Suspension | 63.1 | 46.1 | 1,655 |
| Lamps, reflectors and electrical equipment | 48.5 | 31.1 | 1,271 |
| Body, chassis, structure | 33.5 | 17.9 | 879 |
| Noise, emissions and leaks | 24.3 | 12.6 | 638 |
| Brakes | 19.4 | 16.3 | 509 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,621 (initial tests of this build year) · Method: failure items grouped by DVSA's top-level defect groups, per 100 initial tests; groups with 30+ items · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
How does 2005 compare with the years around it?
Among the 11 published build years of the Mazda 5, 2005 ranks 8 (1 = fails least for its age). 2006: index 100.8.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2005 | 100.8 | 95.5–106.1 | no different (rough estimate) | 2,454 |
| 2006 | 100.8 | 98.1–103.6 | no different | 9,362 |
| 2007 | 103.0 | 100.9–105.1 | worse | 17,370 |
| 2008 | 100.6 | 98.6–102.7 | no different | 17,941 |
| 2009 | 100.3 | 97.7–103.0 | no different | 10,890 |
| 2010 | 101.4 | 98.6–104.3 | no different | 10,193 |
| 2011 | 90.2 | 86.4–94.1 | better | 5,398 |
| 2012 | 85.5 | 81.5–89.5 | better | 5,068 |
| 2013 | 96.0 | 91.4–100.6 | no different | 4,701 |
| 2014 | 93.5 | 88.0–99.0 | better (rough estimate) | 3,613 |
| 2015 | 93.9 | 88.5–99.3 | better | 4,261 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 91,251 (initial tests) · Method: observed failures against those expected for the same model at the same ages, test-year level adjusted; verdict follows the printed one-decimal bound · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
How to cite this page
MOT Risk Index (2026). Mazda 5 2005 MOT statistics (data release dvsa-2024-v2; full dataset motriskindex-families-2024-v5, DOI 10.5281/zenodo.22975051), updated 30 September 2026. motriskindex.co.uk/cars/mazda-5/2005/
How every figure is calculated: methodology. Age, test year and build year are tied together (age = test year − build year), so the test-year level is taken as observed, not estimated.
Other pages for this model
Mazda 5 2006 · Mazda 5 2007 · Mazda 5 2008 · Mazda 5 2009 · Mazda 5 2010 · Mazda 5 2011 · Mazda 5 2012 · Mazda 5 2013 · Mazda 5 2014 · Mazda 5 2015 · Mazda 5 in Norway · Mazda 5 in Finland · Mazda 5 in the Netherlands · Mazda 5 by postcode area · Mazda 5 body, chassis and structure failures · Mazda 5 brakes failures · Mazda 5 vehicle identification failures · Mazda 5 lamps, reflectors and electrics failures · Mazda 5 noise, emissions and leaks failures · Mazda 5 road wheels failures · Mazda 5 seat belts and airbags failures · Mazda 5 steering failures · Mazda 5 suspension failures · Mazda 5 tyres failures · Mazda 5 visibility failures