The picture
Slc: a strong MOT record by UK norms
Across 9,233 MOT tests, the Slc returns 88.1% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is a tyre with the cords showing. A seriously damaged tyre and tyre tread under the limit round out the top three. Average tested mileage sits at 29,787, which is the lens to read those failure rankings through. If you own one and the next test is close, the ranked list below is a sensible pre-test checklist.
Top ten reasons for rejection.
- 01
A tyre cords visible or damaged
259 occurrences · 2.8% of tests
- 02
A tyre seriously damaged
220 occurrences · 2.4% of tests
- 03
Tyre tread depth not in accordance with the requirements
183 occurrences · 2.0% of tests
- 04
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
130 occurrences · 1.4% of tests
- 05
A spring or spring component fractured or seriously weakened
90 occurrences · 1.0% of tests
- 06
A suspension joint dust cover severely deteriorated
57 occurrences · 0.6% of tests
- 07
A tyre seriously damaged
55 occurrences · 0.6% of tests
- 08
A suspension pin, bush or joint excessively worn
53 occurrences · 0.6% of tests
- 09
A tyre seriously damaged
51 occurrences · 0.6% of tests
- 10
A suspension joint dust cover missing or no longer prevents the ingress of dirt etc
47 occurrences · 0.5% of tests
Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.
Worst-case fix budget · top 3 failures
£200–£430
If every one of this Slc's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →
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Tools that pre-empt a retest.
Picked against this car's top failure patterns. Affiliate links to Amazon UK — we earn a small cut at no cost to you. Disclosed up-front, doesn't shape the data.
Buying or keeping a Slc?
Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.
If you own a Slc and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.