SRS warning lamp indicates a fault on the Mercedes-Benz B-Class
SRS warning lamp indicates a fault on the Mercedes-Benz B-Class is recorded on 2,169 tests — 0.9% of all its MOT tests, against 0.4% across every car in the data. That is 2.3× the national share.
Is this unusual for this model?
| Compared with | What it says |
|---|---|
| Every car in the data | 0.4% of tests record it — this model is 2.3× that share |
| The 240 models compared | 55 of 240, 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 2005, 0.7% of this model's tests recorded it; in 2015, 0.3%. The share has fallen 0.4 points over that time. Worst year 2005 at 0.7%; best 2011 at 0.2%.
| Year | Failures recorded | Tests | Share of tests |
|---|---|---|---|
| 2005 | 22 | 3,300 | 0.7% |
| 2006 | 94 | 23,817 | 0.4% |
| 2007 | 148 | 31,491 | 0.5% |
| 2008 | 160 | 41,562 | 0.4% |
| 2009 | 153 | 51,042 | 0.3% |
| 2010 | 148 | 53,268 | 0.3% |
| 2011 | 90 | 41,670 | 0.2% |
| 2012 | 258 | 63,552 | 0.4% |
| 2013 | 350 | 76,626 | 0.5% |
| 2014 | 411 | 88,764 | 0.5% |
| 2015 | 180 | 58,875 | 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 £3–£12 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
- SRS warning lamp indicates a fault: 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 →