Lambda reading outside limits on the Mazda Mx-5

Lambda reading outside limits on the Mazda Mx-5 is recorded on 3,853 tests — 1.4% of all its MOT tests, against 0.5% across every car in the data. That is 2.8× the national share.

Is this unusual for this model?

Compared with	What it says
Every car in the data	0.5% of tests record it — this model is 2.8× that share
The 183 models compared	30 of 183, 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, 2.3% of this model's tests recorded it; in 2016, 0.3%. The share has fallen 2.0 points over that time. Worst year 2000 at 2.3%; best 2012 at 0.3%.

Year	Failures recorded	Tests	Share of tests
2000	451	19,836	2.3%
2001	256	13,994	1.8%
2002	324	22,788	1.4%
2003	455	29,576	1.5%
2004	343	23,196	1.5%
2005	323	23,680	1.4%
2006	437	46,154	0.9%
2007	408	54,952	0.7%
2008	258	38,822	0.7%
2009	140	29,830	0.5%
2010	115	32,810	0.3%
2011	68	23,582	0.3%
2012	52	21,006	0.3%
2016	68	26,076	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 £60–£250 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

Lambda reading outside limits: 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 →