Ball joint dust cover severely deteriorated on the Hyundai I20
Ball joint dust cover severely deteriorated on the Hyundai I20 is recorded on 14,111 tests — 3.2% of all its MOT tests, against 1.3% across every car in the data. That is 2.5× the national share.
Is this unusual for this model?
| Compared with | What it says |
|---|---|
| Every car in the data | 1.3% of tests record it — this model is 2.5× that share |
| The 300 models compared | 33 of 300, highest first |
| The model's own record | 442,812 tests · every year of the I20 → |
A share of tests is not a probability for your car: it counts every Hyundai I20 tested, whatever its mileage, service history and use. The like-for-like comparison on the model page is the fairer number.
Year by year
In 2009, 6.2% of this model's tests recorded it; in 2018, 0.3%. The share has fallen 5.8 points over that time. Worst year 2012 at 6.9%; best 2018 at 0.3%.
| Year | Failures recorded | Tests | Share of tests |
|---|---|---|---|
| 2009 | 2,136 | 34,567 | 6.2% |
| 2010 | 1,212 | 35,730 | 3.4% |
| 2011 | 2,100 | 36,339 | 5.8% |
| 2012 | 2,517 | 36,510 | 6.9% |
| 2013 | 3,076 | 46,619 | 6.6% |
| 2014 | 1,474 | 46,394 | 3.2% |
| 2015 | 331 | 43,513 | 0.8% |
| 2016 | 631 | 46,124 | 1.4% |
| 2017 | 507 | 38,366 | 1.3% |
| 2018 | 92 | 27,971 | 0.3% |
Years with fewer than 0.2% of tests recording the item are left out: a year with two failures in 400 tests is noise, and this table is not here to make noise look like a trend.
What it costs
A typical UK repair for this item is £18–£45 fitted. It is a job a careful owner can do at home. What the part is, and what to buy →
Prices are typical UK supply-and-fitting estimates, not quotes. What happens if it fails covers the retest rules.
Where this sits
- Ball joint dust cover severely deteriorated: every model, every year → — the item's own page, with the part guide.
- Hyundai I20 MOT pass rate by year → — the model's whole record, and what else it fails on.
- Every Hyundai model →