The picture
25: a below-average pass rate worth digging into
Across 5,342 MOT tests, the 25 returns 68.0% first-time pass — well below the UK fleet average. The single most-logged Major fail is a split CV-joint boot. A missing CV-joint boot and a number-plate lamp out round out the top three. Average tested mileage sits at 67,643, 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 transmission shaft constant velocity joint boot severely deteriorated
533 occurrences · 10.0% of tests
- 02
A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc
444 occurrences · 8.3% of tests
- 03
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
280 occurrences · 5.2% of tests
- 04
The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired
264 occurrences · 4.9% of tests
- 05
Wiper blade missing or obviously not clearing the windscreen
167 occurrences · 3.1% of tests
- 06
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
160 occurrences · 3.0% of tests
- 07
A battery insecure but not likely to fall from carrier
158 occurrences · 3.0% of tests
- 08
Exhaust system leaking or insecure
148 occurrences · 2.8% of tests
- 09
Brake pipe damaged or excessively corroded
114 occurrences · 2.1% of tests
- 10
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
107 occurrences · 2.0% 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 2 failures
£28–£80
If every one of this 25'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.
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.
Item 01 · Amazon UK
H7 / W21W bulb pack
A spare-bulb kit lives in the boot. Test morning is not the time to find your stop-lamp's gone.
Search Amazon UK
Item 02 · Amazon UK
Bosch Aerotwin wiper blades
Cheap wipers fail the test on smear streaks. Bosch Aerotwins last a winter and clear a screen properly.
Search Amazon UK
Buying or keeping a 25?
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 25 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.