Audi S4 2019: MOT failure rate for its age
8.9% of 404 MOT tests of the Audi S4 first registered in 2019 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 109.3 (95% CI 73.6–145.0; 100 = normal for this model at that age): the 2019 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 | 8.9 | % | all ages tested | 2019–2024 | 404 |
| Index against this model at the same age (95% CI 73.6–145.0) | 109.3 | index | 100 = normal for this model at that age | 2019–2024 | 404 |
| Rank among this model's 2 build years | 2 | of 2 | 1 = fails least for its age | 2019–2024 | 404 |
| Tested in 2024 | 197 | tests | median 42,627 miles | 2024 | 197 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2019 Audi S4 fail at each age?
Cars built in 2019 were tested at ages 3 to 5 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) |
|---|---|---|---|---|---|
| 3 | 200 (rough estimate) | 7.5 | 4.6–12 | 8.5 | 87.9 |
| 4 | 204 (rough estimate) | 10.3 | 6.8–15.2 | 7.8 | 132.3 |
| 5 | 197 (rough estimate) | 9.6 | 6.3–14.6 | not available | not available |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 601 (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 2019 Audi S4?
The most common failure group on cars built in 2019 is tyres: 5.3 items per 100 first tests, against 8.3 across all build years of the Audi S4. These counts are not age-adjusted: cars built in 2019 were tested at ages 3 to 5.
| Failure group | Built 2019, per 100 | All build years, per 100 | Items |
|---|---|---|---|
| Tyres | 5.3 | 8.3 | 32 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 606 (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 2019 compare with the years around it?
Among the 2 published build years of the Audi S4, 2019 ranks 2 (1 = fails least for its age). 2020: index 103.2.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2019 | 109.3 | 73.6–145.0 | no different (rough estimate) | 404 |
| 2020 | 103.2 | 84.5–121.9 | no different (rough estimate) | 1,390 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 1,794 (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). Audi S4 2019 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/audi-s4/2019/
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
Audi S4 2020 · Audi S4 in the Netherlands · Audi S4 by postcode area · Audi S4 body, chassis and structure failures · Audi S4 brakes failures · Audi S4 vehicle identification failures · Audi S4 lamps, reflectors and electrics failures · Audi S4 noise, emissions and leaks failures · Audi S4 road wheels failures · Audi S4 seat belts and airbags failures · Audi S4 steering failures · Audi S4 suspension failures · Audi S4 tyres failures · Audi S4 visibility failures