Hyundai i800 2015: MOT failure rate for its age
37.3% of 926 MOT tests of the Hyundai i800 first registered in 2015 failed at the first attempt (2019–2024; retests excluded). Against this model's own normal rate at the same ages the index is 101.5 (95% CI 90.8–112.3; 100 = normal for this model at that age): the 2015 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 | 37.3 | % | all ages tested | 2019–2024 | 926 |
| Index against this model at the same age (95% CI 90.8–112.3) | 101.5 | index | 100 = normal for this model at that age | 2019–2024 | 926 |
| Rank among this model's 12 build years | 7 | of 12 | 1 = fails least for its age | 2019–2024 | 926 |
| Tested in 2024 | 148 | tests | median 86,518 miles | 2024 | 148 |
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · full dataset (v5).
How does the 2015 Hyundai i800 fail at each age?
Cars built in 2015 were tested at ages 4 to 9 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) |
|---|---|---|---|---|---|
| 4 | 160 (rough estimate) | 35.6 | 28.6–43.3 | 34.8 | 102.5 |
| 5 | 151 (rough estimate) | 37.7 | 30.4–45.7 | 32.7 | 115.6 |
| 6 | 160 (rough estimate) | 33.1 | 26.3–40.7 | 35.4 | 93.7 |
| 7 | 156 (rough estimate) | 35.3 | 28.2–43 | 37 | 95.2 |
| 8 | 151 (rough estimate) | 44.4 | 36.7–52.3 | 40.1 | 110.8 |
| 9 | 148 (rough estimate) | 37.8 | 30.4–45.9 | 40.5 | 93.3 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 926 (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 2015 Hyundai i800?
The most common failure group on cars built in 2015 is brakes: 29.3 items per 100 first tests, against 25.1 across all build years of the Hyundai i800. These counts are not age-adjusted: cars built in 2015 were tested at ages 4 to 9.
| Failure group | Built 2015, per 100 | All build years, per 100 | Items |
|---|---|---|---|
| Brakes | 29.3 | 25.1 | 271 |
| Lamps, reflectors and electrical equipment | 28.7 | 29.1 | 266 |
| Visibility | 9.7 | 10.1 | 90 |
| Tyres | 9.6 | 8.2 | 89 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 926 (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 2015 compare with the years around it?
Among the 12 published build years of the Hyundai i800, 2015 ranks 7 (1 = fails least for its age). 2014: index 92.5. 2016: index 107.9.
| Build year | Index (100 = normal) | 95% interval | Verdict | Tests |
|---|---|---|---|---|
| 2008 | 108.0 | 95.9–120.0 | no different (rough estimate) | 635 |
| 2009 | 104.8 | 95.3–114.3 | no different (rough estimate) | 996 |
| 2010 | 103.3 | 97.9–108.8 | no different (rough estimate) | 3,059 |
| 2011 | 97.0 | 92.1–102.0 | no different (rough estimate) | 3,501 |
| 2012 | 101.1 | 97.2–104.9 | no different | 6,126 |
| 2013 | 84.0 | 76.1–91.9 | better (rough estimate) | 1,264 |
| 2014 | 92.5 | 82.7–102.4 | no different (rough estimate) | 936 |
| 2015 | 101.5 | 90.8–112.3 | no different (rough estimate) | 926 |
| 2016 | 107.9 | 103.6–112.3 | worse | 6,264 |
| 2017 | 94.8 | 90.9–98.7 | better | 7,163 |
| 2018 | 104.1 | 98.9–109.2 | no different | 4,745 |
| 2019 | 99.7 | 94.9–104.5 | no different | 5,439 |
Source: DVSA MOT bulk data · Window: 2019–2024 · n = 41,054 (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). Hyundai i800 2015 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/hyundai-i800/2015/
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
Hyundai i800 2008 · Hyundai i800 2009 · Hyundai i800 2010 · Hyundai i800 2011 · Hyundai i800 2012 · Hyundai i800 2013 · Hyundai i800 2014 · Hyundai i800 2016 · Hyundai i800 2017 · Hyundai i800 2018 · Hyundai i800 2019 · Hyundai i800 by postcode area · Hyundai i800 body, chassis and structure failures · Hyundai i800 brakes failures · Hyundai i800 vehicle identification failures · Hyundai i800 lamps, reflectors and electrics failures · Hyundai i800 noise, emissions and leaks failures · Hyundai i800 road wheels failures · Hyundai i800 seat belts and airbags failures · Hyundai i800 steering failures · Hyundai i800 suspension failures · Hyundai i800 tyres failures · Hyundai i800 visibility failures