Jaguar S-Type 2004: MOT failure rate for its age
37.5% of 12,270 MOT tests of the Jaguar S-Type 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 98.9 (95% CI 96.1–101.8; 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 | 37.5 | % | all ages tested | 2019–2024 | 12270 |
| Index against this model at the same age (95% CI 96.1–101.8) | 98.9 | index | 100 = normal for this model at that age | 2019–2024 | 12270 |
| Rank among this model's 9 build years | 2 | of 9 | 1 = fails least for its age | 2019–2024 | 12270 |
| Tested in 2024 | 1721 | tests | median 91,669 miles | 2024 | 1721 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2004 Jaguar S-Type 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 | 57 (rough estimate) | 36.8 | 25.5–49.8 | 39 | 94.6 |
| 16 | 3,194 | 37.8 | 36.2–39.5 | 37.6 | 100.5 |
| 17 | 2,856 | 36.9 | 35.2–38.7 | 37.6 | 98.1 |
| 18 | 2,424 | 38 | 36.1–40 | 37.8 | 100.6 |
| 19 | 2,075 | 37.1 | 35.1–39.2 | 38.4 | 96.7 |
| 20 | 1,721 | 37.2 | 34.9–39.5 | 38.1 | 97.7 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 12,327 (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 Jaguar S-Type?
The most common failure group on cars built in 2004 is suspension: 55.3 items per 100 first tests, against 56.2 across all build years of the Jaguar S-Type. 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 |
|---|---|---|---|
| Suspension | 55.3 | 56.2 | 6,815 |
| Lamps, reflectors and electrical equipment | 22.5 | 23.2 | 2,779 |
| Brakes | 22.5 | 23 | 2,777 |
| Steering | 15 | 13.3 | 1,850 |
| Visibility | 10.6 | 10.3 | 1,306 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 12,327 (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 9 published build years of the Jaguar S-Type, 2004 ranks 2 (1 = fails least for its age). 2003: index 100.9. 2005: index 104.1.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 1999 | 102.5 | 95.1–110.0 | no different (rough estimate) | 1,764 |
| 2000 | 101.6 | 96.5–106.7 | no different (rough estimate) | 3,783 |
| 2001 | 107.0 | 102.3–111.7 | worse | 4,777 |
| 2002 | 105.3 | 101.7–108.9 | worse | 7,956 |
| 2003 | 100.9 | 97.7–104.1 | no different | 9,913 |
| 2004 | 98.9 | 96.1–101.8 | no different | 12,270 |
| 2005 | 104.1 | 101.0–107.1 | worse | 11,343 |
| 2006 | 98.4 | 95.4–101.4 | no different | 11,481 |
| 2007 | 99.1 | 96.1–102.1 | no different | 12,566 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 75,853 (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). Jaguar S-Type 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/jaguar-s-type/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
Jaguar S-Type 1999 · Jaguar S-Type 2000 · Jaguar S-Type 2001 · Jaguar S-Type 2002 · Jaguar S-Type 2003 · Jaguar S-Type 2005 · Jaguar S-Type 2006 · Jaguar S-Type 2007 · Jaguar S-Type by postcode area · Jaguar S-Type body, chassis and structure failures · Jaguar S-Type brakes failures · Jaguar S-Type vehicle identification failures · Jaguar S-Type lamps, reflectors and electrics failures · Jaguar S-Type noise, emissions and leaks failures · Jaguar S-Type road wheels failures · Jaguar S-Type seat belts and airbags failures · Jaguar S-Type steering failures · Jaguar S-Type suspension failures · Jaguar S-Type tyres failures · Jaguar S-Type visibility failures