Mini COOPER - 2021
57.3 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 COOPER, model year 2021.
Sample size: 18,628 cars, 40,840 tests and 23,420 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: 18,628 cars
The 2021 MINI Cooper has a notably lower overall defect rate of 57 per 100 vehicles, which is 27% better than the average for cars of the same year, recorded at 79 per 100. Despite showing some mileage-related increases in defects as distance travelled increases, the MINI performs exceptionally well in key areas such as brakes, steering, and lights and electrics, with defect rates significantly lower than the average. For example, brake issues are found in only 14% of MINIs compared to 38% for the average. There are no significant areas where the model stands out negatively, indicating a positive reliability profile.
Cars by mileage segment
Total: 18,628 cars
Categories
Brakes
▲ 63.8% better
14.5 faults / 100 tests
Year avg: 40.0 / 100 tests
- Brake lining or pad: worn below 1.5mm
Steering
▲ 85.7% better
0.1 faults / 100 tests
Year avg: 0.7 / 100 tests
Visibility
▼ 7.6% worse
15.6 faults / 100 tests
Year avg: 14.5 / 100 tests
- Wiper blade: defective
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Wiper blade: missing or obviously not clearing the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
Lights & Electrics
▲ 69.6% better
3.4 faults / 100 tests
Year avg: 11.2 / 100 tests
Wheels & Suspension
▲ 8.1% better
80.2 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 cut in excess of the requirements deep enough to reach the ply or cords
- 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
Body/Structure
▲ 90.5% better
0.2 faults / 100 tests
Year avg: 2.1 / 100 tests
Equipment
▲ 66.7% better
0.5 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 92.6% better
0.2 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: 6,777
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 5,401
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 1,745
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 1,208
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 986
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 876
Wiper blade: defective
MINOR
Occurrences: 838
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 782
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 627
Wiper blade: missing or obviously not clearing the windscreen
PRS
Occurrences: 599
Serious faults (Top 10)
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 986
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 876
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 627
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 194
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 170
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 153
Brake lining or pad: worn down to wear indicator
FAIL
Occurrences: 97
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 31
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 31
Tyre pressure monitoring system malfunctioning or obviously not working
FAIL
Occurrences: 19