Tyre has a bulge on the Mercedes-Benz Cla
Tyre has a bulge on the Mercedes-Benz Cla is recorded on 4,262 tests — 2.0% of all its MOT tests, against 0.9% across every car in the data. That is 2.2× the national share.
Is this unusual for this model?
| Compared with | What it says |
|---|---|
| Every car in the data | 0.9% of tests record it — this model is 2.2× that share |
| The 361 models compared | 21 of 361, highest first |
| The model's own record | 215,204 tests · every year of the Cla → |
A share of tests is not a probability for your car: it counts every Mercedes-Benz Cla 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 2013, 0.7% of this model's tests recorded it; in 2022, 0.4%. The share has fallen 0.3 points over that time. Worst year 2015 at 1.2%; best 2020 at 0.4%.
| Year | Failures recorded | Tests | Share of tests |
|---|---|---|---|
| 2013 | 155 | 23,106 | 0.7% |
| 2014 | 356 | 46,452 | 0.8% |
| 2015 | 593 | 48,412 | 1.2% |
| 2016 | 631 | 80,742 | 0.8% |
| 2017 | 682 | 85,755 | 0.8% |
| 2018 | 739 | 85,188 | 0.9% |
| 2019 | 453 | 54,144 | 0.8% |
| 2020 | 258 | 72,069 | 0.4% |
| 2021 | 248 | 60,834 | 0.4% |
| 2022 | 139 | 35,655 | 0.4% |
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 £45–£95 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
- Tyre has a bulge: every model, every year → — the item's own page, with the part guide.
- Mercedes-Benz Cla MOT pass rate by year → — the model's whole record, and what else it fails on.
- Every Mercedes-Benz model →