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Peugeot 406 2004: MOT failure rate for its age

47.5% of 2,006 MOT tests of the Peugeot 406 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 94.2 (95% CI 88.2–100.2; 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. This is a rough estimate from a smaller sample.

Peugeot 406 built in 2004 at a glance
MeasureValueUnitCompared withYearsTests
Failed first time47.5%all ages tested2019–20242006
Index against this model at the same age (95% CI 88.2–100.2)94.2index100 = normal for this model at that age2019–20242006
Rank among this model's 7 build years1of 71 = fails least for its age2019–20242006
Tested in 2024185testsmedian 138,952 miles2024185
line · Peugeot 406 built 2004 · first-time MOT failure share by age · built 2004 51.8% vs model normal 56.3% at age 15 · 2019–2024
Built 2004 against Peugeot 406 normal for the age: first-time MOT failure share at each age, age 15: 51.8% vs 56.3%; age 16: 47.3% vs 49.2%; age 17: 42.5% vs 49.5%; age 18: 45.3% vs 48.2%; age 19: 45.5% vs 46.3%; age 20: 48.6% vs 44.1%. Axis from 0% to 60%. DVSA MOT bulk data, 2019–2024.
Check a 2004 Peugeot 406 by registration · All Peugeot 406 MOT statistics · Download the build-year table (CSV)

Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).

How does the 2004 Peugeot 406 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.

Peugeot 406 built 2004: first-time MOT failure by age, against the model's normal rate at that age (2019–2024)
AgeTestsFailed, %95% intervalNormal for this model at that age, %Index (100 = normal)
1557951.847.7–55.956.392
16412 (rough estimate)47.342.6–52.249.296.2
17332 (rough estimate)42.537.3–47.849.585.7
18267 (rough estimate)45.339.5–51.348.294.1
19231 (rough estimate)45.539.2–51.946.398.1
20185 (rough estimate)48.641.5–55.844.1110.3

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,006 (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 Peugeot 406?

The most common failure group on cars built in 2004 is lamps, reflectors and electrical equipment: 41.7 items per 100 first tests, against 39.8 across all build years of the Peugeot 406. These counts are not age-adjusted: cars built in 2004 were tested at ages 15 to 20.

Failure items per 100 first tests, Peugeot 406 built 2004 against the Peugeot 406 in all build years (2019–2024, not age-adjusted)
Failure groupBuilt 2004, per 100All build years, per 100Items
Lamps, reflectors and electrical equipment41.739.8836
Brakes38.734.6777
Suspension35.832.9718
Body, chassis, structure17.618.1353
Visibility14.314.4287

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 2,006 (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 7 published build years of the Peugeot 406, 2004 ranks 1 (1 = fails least for its age). 2003: index 97.4.

Peugeot 406 build years: index against the model at the same age (2019–2024)
Build yearIndex (100 = normal)95% intervalVerdictTests
199894.787.3–102.0no different (rough estimate)1,416
199997.091.5–102.5no different (rough estimate)2,587
200099.395.1–103.6no different4,459
200198.094.7–101.4no different6,837
200296.793.6–99.9better7,503
200397.494.3–100.6no different7,515
200494.288.2–100.2no different (rough estimate)2,006

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 32,323 (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). Peugeot 406 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/peugeot-406/2004/

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

Peugeot 406 1998 · Peugeot 406 1999 · Peugeot 406 2000 · Peugeot 406 2001 · Peugeot 406 2002 · Peugeot 406 2003 · Peugeot 406 in Norway · Peugeot 406 in the Netherlands · Peugeot 406 by postcode area · Peugeot 406 body, chassis and structure failures · Peugeot 406 brakes failures · Peugeot 406 vehicle identification failures · Peugeot 406 lamps, reflectors and electrics failures · Peugeot 406 noise, emissions and leaks failures · Peugeot 406 road wheels failures · Peugeot 406 seat belts and airbags failures · Peugeot 406 steering failures · Peugeot 406 suspension failures · Peugeot 406 tyres failures · Peugeot 406 visibility failures