The picture
630: middle-of-the-pack on first-time pass
Across 3,594 MOT tests, the 630 returns 75.9% first-time pass — roughly in line with the UK fleet average. The single most-logged Major fail is a missing suspension dust cover. Windscreen damage and a lamp out round out the top three. Average tested mileage sits at 108,952, 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 suspension joint dust cover missing or no longer prevents the ingress of dirt etc
132 occurrences · 3.7% of tests
- 02
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
121 occurrences · 3.4% of tests
- 03
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
113 occurrences · 3.1% of tests
- 04
A suspension joint dust cover severely deteriorated
108 occurrences · 3.0% of tests
- 05
A suspension pin, bush or joint excessively worn
89 occurrences · 2.5% of tests
- 06
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
85 occurrences · 2.4% of tests
- 07
Tyre tread depth not in accordance with the requirements
83 occurrences · 2.3% of tests
- 08
Engine MIL illuminated indicating a malfunction
70 occurrences · 1.9% of tests
- 09
A tyre cords visible or damaged
66 occurrences · 1.8% of tests
- 10
A suspension pin, bush or joint excessively worn
64 occurrences · 1.8% 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
£240–£720
If every one of this 630'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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Build your own retest budget.
Buying or keeping a 630?
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 630 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.