The picture
924: middle-of-the-pack on first-time pass
Across 767 MOT tests, the 924 returns 72.4% first-time pass — below the UK fleet average. The single most-logged Major fail is a binding brake. Windscreen washers not working and a number-plate lamp out round out the top three. Average tested mileage sits at 51,266, 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
Significant brake effort recorded with no brake applied indicating a binding brake
33 occurrences · 4.3% of tests
- 02
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
32 occurrences · 4.2% of tests
- 03
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
32 occurrences · 4.2% of tests
- 04
Emissions levels exceed default limits
32 occurrences · 4.2% of tests
- 05
A battery insecure but not likely to fall from carrier
25 occurrences · 3.3% of tests
- 06
Wiper blade missing or obviously not clearing the windscreen
23 occurrences · 3.0% of tests
- 07
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
20 occurrences · 2.6% of tests
- 08
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
18 occurrences · 2.3% of tests
- 09
The aim of a headlamp is not within limits laid down in the requirements
18 occurrences · 2.3% of tests
- 10
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
18 occurrences · 2.3% 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.
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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 924?
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 924 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.