Engine oil leaking excessively on the BMW 525
Engine oil leaking excessively on the BMW 525 is recorded on 7,172 tests — 15.5% of all its MOT tests, against 5.4% across every car in the data. That is 2.9× the national share.
Is this unusual for this model?
| Compared with | What it says |
|---|---|
| Every car in the data | 5.4% of tests record it — this model is 2.9× that share |
| The 368 models compared | 21 of 368, highest first |
| The model's own record | 46,357 tests · every year of the 525 → |
A share of tests is not a probability for your car: it counts every BMW 525 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 2001, 14.0% of this model's tests recorded it; in 2015, 2.1%. The share has fallen 11.9 points over that time. Worst year 2004 at 14.7%; best 2015 at 2.1%.
| Year | Failures recorded | Tests | Share of tests |
|---|---|---|---|
| 2001 | 533 | 3,810 | 14.0% |
| 2002 | 548 | 4,998 | 11.0% |
| 2003 | 532 | 7,188 | 7.4% |
| 2004 | 1,072 | 7,274 | 14.7% |
| 2005 | 1,148 | 10,334 | 11.1% |
| 2006 | 1,140 | 13,989 | 8.2% |
| 2007 | 639 | 11,272 | 5.7% |
| 2008 | 360 | 15,237 | 2.4% |
| 2009 | 208 | 3,804 | 5.5% |
| 2010 | 282 | 6,170 | 4.6% |
| 2011 | 262 | 5,232 | 5.0% |
| 2012 | 113 | 2,026 | 5.6% |
| 2013 | 51 | 2,097 | 2.4% |
| 2014 | 79 | 2,754 | 2.9% |
| 2015 | 65 | 3,148 | 2.1% |
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 £200–£700 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
- Engine oil leaking excessively: every model, every year → — the item's own page, with the part guide.
- BMW 525 MOT pass rate by year → — the model's whole record, and what else it fails on.
- Every BMW model →