Is the Mini One reliable?

On MOT evidence the Mini One is above average. It passes 73.9% of tests once age and mileage are accounted for, against a national average of 72.3%, which ranks it 122 of 262 models with enough data for a fair comparison. This measures how often the car meets the MOT standard, not how often it breaks down or what a repair costs.

What is the most common MOT failure on a Mini One?

The item recorded most often is "Wiper blade missing or obviously not clearing the windscreen", which appears in 14.0% of failed Mini One tests. Because one failed test can list several items, these shares do not add up to 100%.

What do testers most often warn about on a Mini One?

The most common advisory is "Tyre tread depth not in accordance with the requirements", noted on 21.6% of all Mini One tests. An advisory is not a failure: it flags something that will likely need attention before the next test.

What mileage does a Mini One usually have at its MOT?

The average odometer reading recorded at test is 61,107 miles. This is the mileage across all tested examples of every age, not an annual figure, so treat it as a description of the fleet rather than a target for one car.

Does a Mini One get harder to pass as it ages?

Yes. At 3 to 5 years old, 88.0% of Mini One tests pass. By fifteen years or more, that falls to 56.7%. Nearly every model follows this pattern, which is why comparing raw pass rates between models is misleading unless age is accounted for.

Are most Mini One models petrol or diesel?

Of the Mini One cars tested, 88% are petrol, 12% are diesel. Fuel type affects which items tend to fail, particularly emissions and exhaust components.

Model reliability file

Mini One MOT pass rate & common failures

From 51,292 recorded MOT tests of the Mini One, published by DVSA.

Data updated 29 July 2026

Quick answer

The Mini One passes 73.9% of MOT tests once results are adjusted for the age and mileage of the cars tested, against a national average of 72.3%. That is above average, ranking it 122 of 262 models with enough data to compare fairly. Based on 51,292 tests. Its most commonly recorded failure is wiper blade missing or obviously not clearing the windscreen, which appears in 14.0% of failed tests. Cars of this model average 61,107 miles on the odometer when tested.

At a glance

Pass rate, adjusted for age and mileage

73.9%national average72.3%unadjusted78.9%range covered97%rank122 of 262

The One is 1.6 percentage points above the national pass rate once age and mileage are accounted for, which is above average. The unadjusted figure is 78.9%; the difference is what the age and mileage of this model’s fleet was hiding.

DVSA recorded wording

Most common failure items

Share of failed Mini One tests in which each item was recorded. One failed test often lists several items, so these do not sum to 100%.

1.Wiper blade missing or obviously not clearing the windscreen14.0%
1,120 occurrencesWiper or washer not working properly explained
2.Tyre tread depth not in accordance with the requirements13.4%
1,073 occurrencesTyre worn close to the legal limit explained
3.A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning13.2%
1,060 occurrencesLamp not working explained
4.A tyre seriously damaged11.1%
891 occurrencesTyre damaged or deteriorated explained
5.A brake lining or pad worn below 1.5mm11.1%
887 occurrencesBrake drum or shoe worn or contaminated explained
6.A tyre cords visible or damaged6.0%
479 occurrencesTyre ply or cord exposed, or the casing separating explained
7.A tyre seriously damaged5.9%
477 occurrencesTyre damaged or deteriorated explained
8.Engine MIL illuminated indicating a malfunction5.6%
452 occurrencesEngine management light on, or not working explained
9.Windscreen washers not working or not providing sufficient fluid to clear the windscreen5.6%
448 occurrencesWiper or washer not working properly explained
10.Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning5.0%
399 occurrencesStop lamp not working explained

Warnings without a failure

Most common advisories

Share of all Mini One tests carrying each advisory. The denominator differs from the failure list above because an advisory can be issued on a car that passed.

1.Tyre tread depth not in accordance with the requirements21.6%
11,069 testsTyre worn close to the legal limit explained
2.A tyre seriously damaged20.0%
10,233 testsTyre damaged or deteriorated explained
3.Brake disc or drum excessively weakened, insecure or fractured10.2%
5,217 testsBrake disc worn, pitted or scored explained
4.A brake lining or pad worn below 1.5mm8.0%
4,123 testsBrake drum or shoe worn or contaminated explained
5.A suspension pin, bush or joint excessively worn4.1%
2,126 testsSuspension arm bush worn explained
6.Brake disc or drum significantly and obviously worn3.4%
1,768 testsBrake disc worn, pitted or scored explained
7.A spring or spring component fractured or seriously weakened3.3%
1,680 testsRoad spring broken or fractured explained
8.A suspension component excessively damaged or corroded3.2%
1,635 testsSuspension mounting corroded or insecure explained

How wear changes the picture

Pass rate by vehicle age

3–5 yrs88%

6–8 yrs85%

9–11 yrs82%

12–14 yrs70%

15+ yrs57%

Bands holding too few tests to be meaningful are omitted rather than shown as a rate.

What gets tested

The One fleet

Average mileage recorded at test: 61,107
Fuel mix of tested cars: Petrol88.1%
Diesel11.9%

Trim names grouped into this model (16)

Recorded exactly as DVSA holds them. Trim-level names are rolled up so one model is not split across a dozen thin pages.

ONE 7 EDITION
ONE AUTO
ONE CONVERTIBLE
ONE COUPE
ONE D
ONE D BAKER STREET
ONE D CLUBMAN
ONE D CONTRYMAN
ONE D COUNTRYMAN
ONE D PIMLICO
ONE ESTATE
ONE GRAPHITE
ONE GRAPHITE AUTO
ONE GRAPHITE CLUBMAN
ONE GRAPHITE CLUBMAN AUTO
ONE SEVEN

Check a specific Mini One

A model average tells you the pattern. Its own MOT record tells you the car.

Compare within the range

Other Mini models

Mini Cooper — 75.9% adjusted
Mini Mini — 69.4% adjusted
Mini Countryman — 79.9% adjusted
Mini Clubman — 76.8% adjusted
Mini John Cooper Works — 83.8% adjusted
Mini Paceman — 81.6% unadjusted
All Mini models

Similar test volumes

Compare against other makes

Fiat Punto — 56.5% adjusted, ranked 261
Porsche 911 — 89.5% adjusted, ranked 3
Skoda Citigo — 75.1% adjusted, ranked 109
Renault Kangoo — 59.0% adjusted, ranked 257

Common questions

Is the Mini One reliable?: On MOT evidence the Mini One is above average. It passes 73.9% of tests once age and mileage are accounted for, against a national average of 72.3%, which ranks it 122 of 262 models with enough data for a fair comparison. This measures how often the car meets the MOT standard, not how often it breaks down or what a repair costs.
What is the most common MOT failure on a Mini One?: The item recorded most often is "Wiper blade missing or obviously not clearing the windscreen", which appears in 14.0% of failed Mini One tests. Because one failed test can list several items, these shares do not add up to 100%.
What do testers most often warn about on a Mini One?: The most common advisory is "Tyre tread depth not in accordance with the requirements", noted on 21.6% of all Mini One tests. An advisory is not a failure: it flags something that will likely need attention before the next test.
What mileage does a Mini One usually have at its MOT?: The average odometer reading recorded at test is 61,107 miles. This is the mileage across all tested examples of every age, not an annual figure, so treat it as a description of the fleet rather than a target for one car.
Does a Mini One get harder to pass as it ages?: Yes. At 3 to 5 years old, 88.0% of Mini One tests pass. By fifteen years or more, that falls to 56.7%. Nearly every model follows this pattern, which is why comparing raw pass rates between models is misleading unless age is accounted for.
Are most Mini One models petrol or diesel?: Of the Mini One cars tested, 88% are petrol, 12% are diesel. Fuel type affects which items tend to fail, particularly emissions and exhaust components.

How this was worked out

Method and limits

Figures come from the DVSA anonymised MOT testing dataset, published under the Open Government Licence. Only class 4 initial tests are counted: retests are excluded so a car appears once, and abandoned tests are excluded entirely. The adjusted rate is directly standardised across twenty-five age and mileage bands and reweighted onto the national distribution, so this model is compared against cars that have lived a similar life rather than against a younger or lighter-used fleet.

An MOT measures whether a car met a legal standard on the day. It is not a breakdown record, a service history or a running-cost estimate, and a pass rate is a property of a fleet rather than a prediction about one car.