Sub-frame corroded on the Mazda Mx-5
Sub-frame corroded on the Mazda Mx-5 is recorded on 17,621 tests — 6.4% of all its MOT tests, against 2.4% across every car in the data. That is 2.7× the national share.
Is this unusual for this model?
| Compared with | What it says |
|---|---|
| Every car in the data | 2.4% of tests record it — this model is 2.7× that share |
| The 291 models compared | 32 of 291, highest first |
| The model's own record | 275,662 tests · every year of the Mx-5 → |
A share of tests is not a probability for your car: it counts every Mazda Mx-5 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, 7.8% of this model's tests recorded it; in 2017, 0.3%. The share has fallen 7.5 points over that time. Worst year 2001 at 8.1%; best 2017 at 0.3%.
| Year | Failures recorded | Tests | Share of tests |
|---|---|---|---|
| 2000 | 776 | 9,918 | 7.8% |
| 2001 | 568 | 6,997 | 8.1% |
| 2002 | 756 | 11,394 | 6.6% |
| 2003 | 945 | 29,576 | 3.2% |
| 2004 | 807 | 23,196 | 3.5% |
| 2005 | 850 | 23,680 | 3.6% |
| 2006 | 2,662 | 46,154 | 5.8% |
| 2007 | 2,962 | 54,952 | 5.4% |
| 2008 | 2,101 | 38,822 | 5.4% |
| 2009 | 1,282 | 29,830 | 4.3% |
| 2010 | 1,381 | 32,810 | 4.2% |
| 2011 | 755 | 23,582 | 3.2% |
| 2012 | 607 | 21,006 | 2.9% |
| 2013 | 520 | 20,714 | 2.5% |
| 2014 | 356 | 18,880 | 1.9% |
| 2015 | 142 | 19,200 | 0.7% |
| 2016 | 79 | 13,038 | 0.6% |
| 2017 | 46 | 14,173 | 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 £180–£450 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
- Sub-frame corroded: every model, every year → — the item's own page, with the part guide.
- Mazda Mx-5 MOT pass rate by year → — the model's whole record, and what else it fails on.
- Every Mazda model →