Ball joint dust cover severely deteriorated on the Jaguar Xj
Ball joint dust cover severely deteriorated on the Jaguar Xj is recorded on 3,551 tests — 5.2% of all its MOT tests, against 1.3% across every car in the data. That is 4.0× 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 4.0× that share |
| The 300 models compared | 12 of 300, highest first |
| The model's own record | 68,454 tests · every year of the Xj → |
A share of tests is not a probability for your car: it counts every Jaguar Xj 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 2003, 12.6% of this model's tests recorded it; in 2018, 0.3%. The share has fallen 12.4 points over that time. Worst year 2003 at 12.6%; best 2018 at 0.3%.
| Year | Failures recorded | Tests | Share of tests |
|---|---|---|---|
| 2003 | 729 | 5,772 | 12.6% |
| 2004 | 643 | 5,628 | 11.4% |
| 2005 | 394 | 3,870 | 10.2% |
| 2006 | 403 | 4,563 | 8.8% |
| 2007 | 362 | 4,269 | 8.5% |
| 2008 | 202 | 3,136 | 6.4% |
| 2010 | 180 | 4,632 | 3.9% |
| 2011 | 161 | 5,247 | 3.1% |
| 2012 | 89 | 3,464 | 2.6% |
| 2013 | 80 | 3,905 | 2.0% |
| 2014 | 47 | 3,483 | 1.4% |
| 2018 | 6 | 2,108 | 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.
- Jaguar Xj MOT pass rate by year → — the model's whole record, and what else it fails on.
- Every Jaguar model →