Nissan Primastar 2004: MOT failure rate for its age
54.5% of 6,702 MOT tests of the Nissan Primastar first registered in 2004 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 100.0 (95% CI 96.8–103.3; 100 = normal for this model at that age): the 2004 build year is no different from other years of the same model at the same age.
| Measure | Value | Unit | Compared with | Years | Tests |
|---|---|---|---|---|---|
| Failed first time | 54.5 | % | all ages tested | 2019–2024 | 6702 |
| Index against this model at the same age (95% CI 96.8–103.3) | 100.0 | index | 100 = normal for this model at that age | 2019–2024 | 6702 |
| Rank among this model's 13 build years | 7 | of 13 | 1 = fails least for its age | 2019–2024 | 6702 |
| Tested in 2024 | 717 | tests | median 153,760 miles | 2024 | 717 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2004 Nissan Primastar fail at each age?
Cars built in 2004 were tested at ages 15 to 20 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) |
|---|---|---|---|---|---|
| 15 | 1,557 | 55.8 | 53.3–58.3 | 59 | 94.6 |
| 16 | 1,288 | 52.8 | 50.1–55.5 | 53.8 | 98.1 |
| 17 | 1,218 | 57.8 | 55–60.5 | 54.3 | 106.5 |
| 18 | 1,053 | 52.7 | 49.7–55.7 | 51.5 | 102.4 |
| 19 | 869 | 51.9 | 48.6–55.2 | 52 | 99.9 |
| 20 | 717 | 54.4 | 50.7–58 | 53.2 | 102.3 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,702 (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 2004 Nissan Primastar?
The most common failure group on cars built in 2004 is lamps, reflectors and electrical equipment: 61.5 items per 100 first tests, against 46.1 across all build years of the Nissan Primastar. These counts are not age-adjusted: cars built in 2004 were tested at ages 15 to 20.
| Failure group | Built 2004, per 100 | All build years, per 100 | Items |
|---|---|---|---|
| Lamps, reflectors and electrical equipment | 61.5 | 46.1 | 4,120 |
| Suspension | 55.1 | 44.2 | 3,694 |
| Brakes | 45.1 | 43.7 | 3,024 |
| Visibility | 28.1 | 24 | 1,883 |
| Steering | 18.5 | 16.7 | 1,240 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 6,702 (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 2004 compare with the years around it?
Among the 13 published build years of the Nissan Primastar, 2004 ranks 7 (1 = fails least for its age). 2003: index 102.4. 2005: index 100.9.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2002 | 105.0 | 89.6–120.4 | no different (rough estimate) | 310 |
| 2003 | 102.4 | 98.2–106.6 | no different | 4,135 |
| 2004 | 100.0 | 96.8–103.3 | no different | 6,702 |
| 2005 | 100.9 | 98.0–103.9 | no different | 8,166 |
| 2006 | 98.1 | 95.3–100.9 | no different | 8,731 |
| 2007 | 98.4 | 95.8–101.0 | no different | 10,164 |
| 2008 | 98.4 | 95.2–101.7 | no different | 6,716 |
| 2009 | 97.9 | 94.4–101.5 | no different | 5,509 |
| 2010 | 100.5 | 95.6–105.4 | no different (rough estimate) | 2,959 |
| 2011 | 101.6 | 98.2–105.0 | no different | 6,280 |
| 2012 | 100.0 | 95.2–104.8 | no different (rough estimate) | 3,183 |
| 2013 | 99.2 | 94.3–104.2 | no different (rough estimate) | 3,155 |
| 2014 | 97.4 | 92.1–102.8 | no different (rough estimate) | 2,723 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 68,733 (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). Nissan Primastar 2004 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/nissan-primastar/2004/
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
Nissan Primastar 2002 · Nissan Primastar 2003 · Nissan Primastar 2005 · Nissan Primastar 2006 · Nissan Primastar 2007 · Nissan Primastar 2008 · Nissan Primastar 2009 · Nissan Primastar 2010 · Nissan Primastar 2011 · Nissan Primastar 2012 · Nissan Primastar 2013 · Nissan Primastar 2014 · Nissan Primastar by postcode area · Nissan Primastar body, chassis and structure failures · Nissan Primastar brakes failures · Nissan Primastar vehicle identification failures · Nissan Primastar lamps, reflectors and electrics failures · Nissan Primastar noise, emissions and leaks failures · Nissan Primastar road wheels failures · Nissan Primastar seat belts and airbags failures · Nissan Primastar steering failures · Nissan Primastar suspension failures · Nissan Primastar tyres failures · Nissan Primastar visibility failures