The picture
V50: a below-average pass rate worth digging into
Across 46,001 MOT tests, the V50 returns 66.1% first-time pass — well below the UK fleet average. The single most-logged Major fail is a number-plate lamp out. A split CV-joint boot and a broken or weak spring round out the top three. Average tested mileage sits at 128,677, 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 rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
3,507 occurrences · 7.6% of tests
- 02
A transmission shaft constant velocity joint boot severely deteriorated
2,722 occurrences · 5.9% of tests
- 03
A spring or spring component fractured or seriously weakened
2,643 occurrences · 5.7% of tests
- 04
A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc
2,437 occurrences · 5.3% of tests
- 05
A suspension pin, bush or joint excessively worn
1,956 occurrences · 4.3% of tests
- 06
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
1,903 occurrences · 4.1% of tests
- 07
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
1,862 occurrences · 4.0% of tests
- 08
A tyre cords visible or damaged
1,803 occurrences · 3.9% of tests
- 09
Tyre tread depth not in accordance with the requirements
1,420 occurrences · 3.1% of tests
- 10
A lamp with a multiple light source up to 1/2 not functioning
1,410 occurrences · 3.1% 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
£168–£515
If every one of this V50'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 V50?
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 V50 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.