Engine oil leaking excessively on the Mazda Bongo
Engine oil leaking excessively on the Mazda Bongo is recorded on 5,224 tests — 16.9% of all its MOT tests, against 5.4% across every car in the data. That is 3.1× 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 3.1× that share |
| The 368 models compared | 14 of 368, highest first |
| The model's own record | 30,855 tests · every year of the Bongo → |
A share of tests is not a probability for your car: it counts every Mazda Bongo 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 2000, 5.6% of this model's tests recorded it; in 2016, 8.4%. The share has risen 2.9 points over that time. Worst year 2008 at 11.0%; best 2002 at 5.4%.
| Year | Failures recorded | Tests | Share of tests |
|---|---|---|---|
| 2000 | 140 | 2,516 | 5.6% |
| 2001 | 145 | 2,648 | 5.5% |
| 2002 | 154 | 2,850 | 5.4% |
| 2003 | 181 | 2,282 | 7.9% |
| 2004 | 316 | 3,704 | 8.5% |
| 2005 | 509 | 5,258 | 9.7% |
| 2006 | 502 | 4,778 | 10.5% |
| 2007 | 596 | 7,761 | 7.7% |
| 2008 | 443 | 4,042 | 11.0% |
| 2009 | 266 | 2,930 | 9.1% |
| 2010 | 360 | 3,470 | 10.4% |
| 2011 | 254 | 2,816 | 9.0% |
| 2012 | 192 | 2,350 | 8.2% |
| 2013 | 199 | 2,630 | 7.6% |
| 2014 | 214 | 3,260 | 6.6% |
| 2015 | 208 | 3,046 | 6.8% |
| 2016 | 247 | 2,930 | 8.4% |
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 £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.
- Mazda Bongo MOT pass rate by year → — the model's whole record, and what else it fails on.
- Every Mazda model →