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Seat Altea 2005: MOT failure rate for its age

49.9% of 7,681 MOT tests of the Seat Altea 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 102.3 (95% CI 99.1–105.6; 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.

Seat Altea built in 2005 at a glance
MeasureValueUnitCompared withYearsTests
Failed first time49.9%all ages tested2019–20247681
Index against this model at the same age (95% CI 99.1–105.6)102.3index100 = normal for this model at that age2019–20247681
Rank among this model's 12 build years10of 121 = fails least for its age2019–20247681
Tested in 2024575testsmedian 124,614 miles2024575
line · Seat Altea built 2005 · first-time MOT failure share by age · built 2005 49.5% vs model normal 50.7% at age 14 · 2019–2024
Built 2005 against Seat Altea normal for the age: first-time MOT failure share at each age, age 14: 49.5% vs 50.7%; age 15: 50% vs 48.5%; age 16: 52.4% vs 48%; age 17: 46.7% vs 45.8%; age 18: 48.2% vs 47.5%; age 19: 53.2% vs 51.4%. Axis from 0% to 60%. DVSA MOT bulk data, 2019–2024.
Check a 2005 Seat Altea by registration · All Seat Altea 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 2005 Seat Altea 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.

Seat Altea built 2005: 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)
142,18649.547.4–51.650.797.6
151,7095047.7–52.448.5103.2
161,36952.449.8–55.148109.3
171,04646.743.7–49.845.8102.2
1879648.244.8–51.747.5101.5
1957553.249.1–57.351.4103.5

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 7,681 (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 Seat Altea?

The most common failure group on cars built in 2005 is suspension: 35.6 items per 100 first tests, against 30.9 across all build years of the Seat Altea. These counts are not age-adjusted: cars built in 2005 were tested at ages 14 to 19.

Failure items per 100 first tests, Seat Altea built 2005 against the Seat Altea in all build years (2019–2024, not age-adjusted)
Failure groupBuilt 2005, per 100All build years, per 100Items
Suspension35.630.92,733
Lamps, reflectors and electrical equipment34.7242,663
Brakes28.918.42,221
Body, chassis, structure27.815.72,134
Tyres15.4121,184

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 7,681 (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 12 published build years of the Seat Altea, 2005 ranks 10 (1 = fails least for its age). 2004: index 105.5. 2006: index 102.8.

Seat Altea build years: index against the model at the same age (2019–2024)
Build yearIndex (100 = normal)95% intervalVerdictTests
2004105.5100.5–110.4worse (rough estimate)3,300
2005102.399.1–105.6no different7,681
2006102.8100.3–105.3worse13,345
2007100.098.0–102.1no different20,236
2008100.898.5–103.1no different16,290
2009100.898.1–103.5no different12,522
2010101.498.2–104.6no different9,607
201192.789.4–96.1better8,864
201290.887.6–94.0better10,647
201398.594.8–102.3no different9,378
201493.688.2–99.0better4,861
201593.485.9–101.0no different (rough estimate)2,857

Source: DVSA MOT bulk data · Window: 2019–2024 · n = 119,588 (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). Seat Altea 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/seat-altea/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

Seat Altea 2004 · Seat Altea 2006 · Seat Altea 2007 · Seat Altea 2008 · Seat Altea 2009 · Seat Altea 2010 · Seat Altea 2011 · Seat Altea 2012 · Seat Altea 2013 · Seat Altea 2014 · Seat Altea 2015 · Seat Altea in Finland · Seat Altea in the Netherlands · Seat Altea by postcode area · Seat Altea body, chassis and structure failures · Seat Altea brakes failures · Seat Altea vehicle identification failures · Seat Altea lamps, reflectors and electrics failures · Seat Altea noise, emissions and leaks failures · Seat Altea road wheels failures · Seat Altea seat belts and airbags failures · Seat Altea steering failures · Seat Altea suspension failures · Seat Altea tyres failures · Seat Altea visibility failures