Top ten reasons for rejection.
Filter trivial fails:
- 01
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
105 occurrences · 4.6% of tests
- 02
a brake lining or pad worn below 1.5mm
95 occurrences · 4.2% of tests
- 03
A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED
84 occurrences · 3.7% of tests
- 04
Wiper blade missing or obviously not clearing the windscreen
71 occurrences · 3.1% of tests
- 05
A transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc
58 occurrences · 2.6% of tests
- 06
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
57 occurrences · 2.5% of tests
- 07
A lens defective which has no effect on emitted light
55 occurrences · 2.4% of tests
- 08
A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
55 occurrences · 2.4% of tests
- 09
Engine MIL illuminated indicating a malfunction
52 occurrences · 2.3% of tests
- 10
A transmission shaft constant velocity joint boot severely deteriorated
50 occurrences · 2.2% 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
£110–£285
If every one of this Deliver 9'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
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 02 · 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
Item 03 · 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
My Motor World · affiliate
Parts & supplies for this fix
Affiliate links — small commission, no extra cost to you.
Click Mechanic · affiliate
Book a mobile mechanic
Affiliate links — small commission, no extra cost to you.
Mobile mechanic · UK-wide
Book a mechanic at your door.
Fixed-price quotes upfront. No garage needed. Click Mechanic sends a vetted local mechanic to you — home, work, or roadside.
Buying or keeping a Deliver 9?
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 Deliver 9 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.