Rigid brake pipes excessively corroded on the Mercedes-Benz Cls
Rigid brake pipes excessively corroded on the Mercedes-Benz Cls is recorded on 12,768 tests — 15.4% of all its MOT tests, against 4.6% across every car in the data. That is 3.3× the national share.
Is this unusual for this model?
| Compared with | What it says |
|---|---|
| Every car in the data | 4.6% of tests record it — this model is 3.3× that share |
| The 318 models compared | 36 of 318, highest first |
| The model's own record | 82,706 tests · every year of the Cls → |
A share of tests is not a probability for your car: it counts every Mercedes-Benz Cls 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 2005, 9.6% of this model's tests recorded it; in 2015, 1.8%. The share has fallen 7.8 points over that time. Worst year 2013 at 13.1%; best 2015 at 1.8%.
| Year | Failures recorded | Tests | Share of tests |
|---|---|---|---|
| 2005 | 642 | 6,722 | 9.6% |
| 2006 | 1,230 | 14,871 | 8.3% |
| 2007 | 1,444 | 12,178 | 11.9% |
| 2008 | 1,110 | 9,812 | 11.3% |
| 2009 | 950 | 8,028 | 11.8% |
| 2010 | 959 | 7,820 | 12.3% |
| 2011 | 862 | 12,213 | 7.1% |
| 2012 | 903 | 7,858 | 11.5% |
| 2013 | 2,886 | 22,040 | 13.1% |
| 2014 | 1,420 | 12,668 | 11.2% |
| 2015 | 350 | 19,884 | 1.8% |
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 £80–£180 fitted. It is a job for a garage, not a driveway. 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
- Rigid brake pipes excessively corroded: every model, every year → — the item's own page, with the part guide.
- Mercedes-Benz Cls MOT pass rate by year → — the model's whole record, and what else it fails on.
- Every Mercedes-Benz model →