The picture
Cbf 125 M-D: middle-of-the-pack on first-time pass
Across 584 MOT tests, the Cbf 125 M-D returns 75.7% first-time pass — roughly in line with the UK fleet average. The single most-logged Major fail is transmission belt, chain. Tyre tread under the limit and brake pads worn below 1.0 mm round out the top three. Average tested mileage sits at 18,274, 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 belt, chain, sprocket or pulley excessively loose or worn
16 occurrences · 2.7% of tests
- 02
Tyre tread depth not in accordance with the requirements
14 occurrences · 2.4% of tests
- 03
Brake lining or pad worn below 1.0mm
11 occurrences · 1.9% of tests
- 04
Headlamp not securely attached
10 occurrences · 1.7% of tests
- 05
A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
10 occurrences · 1.7% of tests
- 06
A shock absorber not functioning or leaking severely
10 occurrences · 1.7% of tests
- 07
The aim of a headlamp is not within limits laid down in the requirements
8 occurrences · 1.4% of tests
- 08
A headlamp missing, inoperative or more than ½ not functioning in the case of LED
7 occurrences · 1.2% of tests
- 09
A wheel bearing with excessive play
7 occurrences · 1.2% of tests
- 10
A transmission belt, chain, sprocket or pulley excessively loose or worn
7 occurrences · 1.2% 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 3 failures
£150–£335
If every one of this Cbf 125 M D'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
Digital tyre-tread depth gauge
Five quid for a gauge beats £150 for a retest. UK MOT minimum is 1.6mm — most testers fail anything below 2mm to be safe.
Search Amazon UK
Item 02 · Amazon UK
Brake pad measurement gauge
Testers fail pads under 1.5mm. A wear gauge tells you if you've got two months left or two weeks.
Search Amazon UK
Item 03 · Amazon UK
Headlight restoration kit
Yellowed lenses fail the light-output test. A restoration kit lifts the haze in an afternoon for £20.
Search Amazon UK
Buying or keeping a Cbf 125 M D?
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 Cbf 125 M D 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.