Lambda reading outside limits on the Smart Mcc Fortwo

Lambda reading outside limits on the Smart Mcc Fortwo is recorded on 1,735 tests — 1.2% of all its MOT tests, against 0.5% across every car in the data. That is 2.4× 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 2.4× that share
The 183 models compared	37 of 183, highest first
The model's own record	142,160 tests · every year of the Fortwo →

A share of tests is not a probability for your car: it counts every Smart Mcc Fortwo 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 2004, 2.0% of this model's tests recorded it; in 2018, 0.4%. The share has fallen 1.6 points over that time. Worst year 2004 at 2.0%; best 2009 at 0.3%.

Year	Failures recorded	Tests	Share of tests
2004	70	3,468	2.0%
2006	67	5,000	1.3%
2007	95	12,430	0.8%
2008	122	23,022	0.5%
2009	72	29,208	0.3%
2010	58	13,683	0.4%
2011	98	17,752	0.6%
2012	60	5,218	1.1%
2013	38	6,268	0.6%
2014	154	25,052	0.6%
2015	158	14,924	1.1%
2016	383	38,532	1.0%
2017	190	15,839	1.2%
2018	48	10,870	0.4%

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 £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.
Smart Mcc Fortwo MOT pass rate by year → — the model's whole record, and what else it fails on.
Every Smart Mcc model →