Linkage ball joint dust cover insecure on the Mercedes-Benz B-Class
Linkage ball joint dust cover insecure on the Mercedes-Benz B-Class is recorded on 4,406 tests — 1.9% of all its MOT tests, against 0.6% across every car in the data. That is 3.2× the national share.
Is this unusual for this model?
| Compared with | What it says |
|---|---|
| Every car in the data | 0.6% of tests record it — this model is 3.2× that share |
| The 233 models compared | 23 of 233, highest first |
| The model's own record | 230,643 tests · every year of the B-Class → |
A share of tests is not a probability for your car: it counts every Mercedes-Benz B-Class 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 2006, 0.2% of this model's tests recorded it; in 2017, 0.2%. The share has barely moved over that time. Worst year 2012 at 1.7%; best 2006 at 0.2%.
| Year | Failures recorded | Tests | Share of tests |
|---|---|---|---|
| 2006 | 17 | 7,939 | 0.2% |
| 2007 | 179 | 20,994 | 0.8% |
| 2008 | 318 | 27,708 | 1.1% |
| 2009 | 402 | 34,028 | 1.2% |
| 2010 | 428 | 35,512 | 1.2% |
| 2011 | 313 | 27,780 | 1.1% |
| 2012 | 713 | 42,368 | 1.7% |
| 2013 | 711 | 51,084 | 1.4% |
| 2014 | 700 | 59,176 | 1.2% |
| 2015 | 315 | 39,250 | 0.8% |
| 2016 | 197 | 36,588 | 0.5% |
| 2017 | 91 | 38,388 | 0.2% |
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
- Linkage ball joint dust cover insecure: every model, every year → — the item's own page, with the part guide.
- Mercedes-Benz B-Class MOT pass rate by year → — the model's whole record, and what else it fails on.
- Every Mercedes-Benz model →