Mini
One Auto
1,716 MOT tests analysed. lands in the middle of the pack — here's where One Autos pass, fail, and end up on the retest sheet.
That's 0.8 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
78.3%
Pass-after-fix
7.6%
Fail
13.5%
Avg miles
57,435
Pass + Pass-after-fix + Fail = 100%
Petrol cars first registered from January 2006 meet Euro 4 — compliant in London ULEZ, Birmingham CAZ, Bristol CAZ, and Glasgow LEZ.
The picture
One Auto: middle-of-the-pack on first-time pass
Across 1,151 MOT tests, the One Auto returns 79.4% first-time pass — roughly in line with the UK fleet average. The single most-logged Major fail is a number-plate lamp out. Windscreen damage and wipers that don't clear the screen round out the top three. Average tested mileage sits at 53,384, 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.
ABI Insurance Group
Group 14–22
Below the fleet average — generally reasonable to insure. Lower groups cost less to insure; UK fleet average is around Group 22.
Source: ABI Group Rating Panel · administered by Thatcham Research · groups cover standard variants; performance trims may sit higher. Browse all insurance groups →
14–22
out of 50
Top ten reasons for rejection.
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- 01
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
72 occurrences · 4.2% of tests
- 02
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
50 occurrences · 2.9% of tests
- 03
Stop lamp with a multiple light source up to 1/2 not functioning
29 occurrences · 1.7% of tests
- 04
Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
23 occurrences · 1.3% of tests
- 05
Engine MIL illuminated indicating a malfunction
21 occurrences · 1.2% of tests
- 06
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
20 occurrences · 1.2% of tests
- 07
A tyre seriously damaged
20 occurrences · 1.2% of tests
- 08
Wiper blade missing or obviously not clearing the windscreen
18 occurrences · 1.0% of tests
- 09
a brake lining or pad worn below 1.5mm
17 occurrences · 1.0% of tests
- 10
Tyre tread depth not in accordance with the requirements
17 occurrences · 1.0% 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
£24–£105
If every one of this One Auto'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.
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Parts & supplies for this fix
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Draper
Draper Air Mini Oiler
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Hycote
Hycote MINI Chilli Red Double Acrylic Spray Paint 150ml
£6.59
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Hycote
Hycote MINI Cosmic Blue Double Acrylic Spray Paint 150ml
£6.59
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Buying or keeping an One Auto?
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 an One Auto 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.