The picture
C 125 A-K: a strong MOT record by UK norms
Across 483 MOT tests, the C 125 A-K returns 96.5% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is tyre tread under the limit. A binding brake and on a motorcycle with two front round out the top three. Average tested mileage sits at 4,226, 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
Tyre tread depth not in accordance with the requirements
7 occurrences · 1.4% of tests
- 02
Significant brake effort recorded with no brake applied indicating a binding brake
5 occurrences · 1.0% of tests
- 03
On a motorcycle with two front or rear wheels, there is inadequate braking effort at a wheel
1 occurrences · 0.2% of tests
- 04
Significant brake effort recorded with no brake applied indicating a binding brake
1 occurrences · 0.2% of tests
- 05
Steering head bearings have excessive wear or play
1 occurrences · 0.2% of tests
- 06
Indicator switch does not operate in accordance with the requirements
1 occurrences · 0.2% of tests
- 07
A rear registration plate lamp or light source missing or inoperative in the case of a single lamp or all lamps
1 occurrences · 0.2% of tests
- 08
A wheel bearing with excessive play
1 occurrences · 0.2% of tests
- 09
A wheel bearing play so excessive it is likely to break up or directional control impaired
1 occurrences · 0.2% of tests
- 10
A suspension component insecurely attached
1 occurrences · 0.2% 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
£150–£285
If every one of this C 125 A K'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 C 125 A K?
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 C 125 A K 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.