Mini JOHN COOPER WORKS - 2021
55.1 faults per 100 tests
Year average for all cars of 2021 is 80.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mini JOHN COOPER WORKS, model year 2021.
Sample size: 3,136 cars, 7,997 tests and 4,406 recorded faults.
0%
Less faults compared to the average car of same model year
Less faults compared to the average car of same model year
Quick summary
Total: 3,136 cars
The 2021 MINI John Cooper Works has an overall defect rate of 55 per 100 vehicles, which is significantly lower than the yearly average of 79 per 100, representing a 30% improvement. This model shows a notable performance in several categories, particularly excelling in brakes, steering, lights and electrics, body structure, and equipment, with each category exhibiting a defect rate far below the average. While tyre wear is present, it is not a primary concern for this model compared to its peers. Mileage-related trends indicate a decrease in defect rates as mileage increases, aligning closely with the general pattern observed across vehicles of the same year.
Cars by mileage segment
Total: 3,136 cars
More model years for Mini JOHN COOPER WORKS
Other models from Mini
Categories
Brakes
▲ 54.8% better
18.1 faults / 100 tests
Year avg: 40.0 / 100 tests
- Brake lining or pad: worn below 1.5mm
- Brake disc or drum: insecure, fractured or otherwise likely to fail
Steering
▲ 85.7% better
0.1 faults / 100 tests
Year avg: 0.7 / 100 tests
Visibility
▲ 15.9% better
12.2 faults / 100 tests
Year avg: 14.5 / 100 tests
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Wiper blade: defective
Lights & Electrics
▲ 61.6% better
4.3 faults / 100 tests
Year avg: 11.2 / 100 tests
- The aim of a headlamp is not within limits laid down in the requirements
Wheels & Suspension
▲ 14.2% better
74.9 faults / 100 tests
Year avg: 87.3 / 100 tests
- Tyre tread depth not in accordance with the requirements
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
- A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
Body/Structure
▲ 85.7% better
0.3 faults / 100 tests
Year avg: 2.1 / 100 tests
Equipment
▲ 86.7% better
0.2 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 88.9% better
0.3 faults / 100 tests
Year avg: 2.7 / 100 tests
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 1,348
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 937
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 551
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 250
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 202
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 184
Wiper blade: defective
MINOR
Occurrences: 145
The aim of a headlamp is not within limits laid down in the requirements
PRS
Occurrences: 135
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 116
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 100
Serious faults (Top 10)
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 250
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 116
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 54
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 49
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 22
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 14
A wheel: with a loose or missing wheel nut, bolt or stud
FAIL
Occurrences: 10
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 7
Any fracture or welding defect on a wheel
FAIL
Occurrences: 7
Tyre pressure monitoring system malfunctioning or obviously not working
FAIL
Occurrences: 5