Mg 3 - 2020
101.5 faults per 100 tests
Year average for all cars of 2020 is 91.3 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mg 3, model year 2020.
Sample size: 2,544 cars, 5,460 tests and 5,544 recorded faults.
0%
More faults compared to the average car of same model year
More faults compared to the average car of same model year
Quick summary
Total: 2,544 cars
The 2020 MG 3 has a higher overall defect rate compared to the average car of the same year, with 102 defects per 100 vehicles, which is 13% above the average of 90 defects. Notably, this model shows significant mileage-related trends, with defect rates increasing sharply in higher mileage brackets. It performs particularly well in steering and body/structure categories, exhibiting lower defect rates than the average. However, it falls short in lights and electrics, which are more than 90% higher than average, indicating a notable area for concern.
Cars by mileage segment
Total: 2,544 cars
Categories
Brakes
▼ 7.9% worse
54.8 faults / 100 tests
Year avg: 50.8 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake disc or drum: significantly and obviously worn
- Parking brake efficiency: below minimum requirement
- Brake lining or pad: worn below 1.5mm
- Brake lining or pad: worn below 1.5mm
Steering
▲ 33.3% better
1.0 faults / 100 tests
Year avg: 1.5 / 100 tests
- A steering ball joint: with excessive wear or free play
- Power steering fluid leaking or system malfunctioning
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
- A steering ball joint: with excessive wear or free play
- Free play in the steering, measured at the rim of the steering wheel is: excessive
Visibility
▲ 15.6% better
11.9 faults / 100 tests
Year avg: 14.1 / 100 tests
- 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: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
Lights & Electrics
▼ 83.9% worse
20.6 faults / 100 tests
Year avg: 11.2 / 100 tests
- The aim of a headlamp is not within limits laid down in the requirements
- Stop lamp(s): all missing or inoperative
- A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
- Stop lamp(s): all missing or inoperative
- The aim of a headlamp is not within limits laid down in the requirements
Wheels & Suspension
▼ 11.6% worse
108.8 faults / 100 tests
Year avg: 97.5 / 100 tests
- 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
- 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
Body/Structure
▲ 54.2% better
1.1 faults / 100 tests
Year avg: 2.4 / 100 tests
- Exhaust system has a major leak or is insecure
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
- A transmission shaft constant velocity joint boot: severely deteriorated
- Bumper: insecure or with damage likely to cause injury when grazed or contacted
- A door will not open using the relevant control or close properly
Equipment
▼ 20.0% worse
1.8 faults / 100 tests
Year avg: 1.5 / 100 tests
- A seat belt:
- A seat belt: or flexible stalk damaged
- ESC MIL indicates a system malfunction
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
Other
▲ 18.9% better
3.0 faults / 100 tests
Year avg: 3.7 / 100 tests
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Lambda coefficient outside the default limits or the range specified by the manufacturer
- Any part of the noise suppression system: insecure
- Engine MIL inoperative or indicating a malfunction
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
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: 1,117
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,008
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 590
Brake lining or pad: worn below 1.5mm
ADVISORY
Occurrences: 416
The aim of a headlamp is not within limits laid down in the requirements
PRS
Occurrences: 246
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 183
Brake disc or drum: significantly and obviously worn
ADVISORY
Occurrences: 150
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 149
Wiper blade: defective
MINOR
Occurrences: 132
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 92
Serious faults (Top 10)
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 183
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 92
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 76
Stop lamp(s): all missing or inoperative
FAIL
Occurrences: 58
Brake lining or pad: worn below 1.5mm
FAIL
Occurrences: 56
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 46
Tyre pressure monitoring system malfunctioning or obviously not working
FAIL
Occurrences: 38
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 38
A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
FAIL
Occurrences: 34
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 33