The picture
Master Mm35 Business Dci: middle-of-the-pack on first-time pass
Across 571 MOT tests, the Master Mm35 Business Dci returns 73.9% first-time pass — below the UK fleet average. The single most-logged Major fail is windscreen damage. A number-plate lamp out and brake pads worn below 1.5 mm round out the top three. Average tested mileage sits at 59,945, 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
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
37 occurrences · 6.5% of tests
- 02
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
31 occurrences · 5.4% of tests
- 03
a brake lining or pad worn below 1.5mm
21 occurrences · 3.7% of tests
- 04
Engine MIL illuminated indicating a malfunction
20 occurrences · 3.5% of tests
- 05
Parking brake efficiency below minimum requirement
16 occurrences · 2.8% of tests
- 06
A tyre seriously damaged
16 occurrences · 2.8% of tests
- 07
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
15 occurrences · 2.6% of tests
- 08
Wiper blade missing or obviously not clearing the windscreen
14 occurrences · 2.5% of tests
- 09
A body panel or body component damaged or corroded and likely to cause injury when grazed or contacted, or insecure
12 occurrences · 2.1% of tests
- 10
The aim of a headlamp is not within limits laid down in the requirements
9 occurrences · 1.6% 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
£88–£195
If every one of this Master Mm35 Business Dci'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
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
Buying or keeping a Master Mm35 Business Dci?
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 Master Mm35 Business Dci 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.