Mg 4 - 2023
49.4 faults per 100 tests
Year average for all cars of 2023 is 36.8 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mg 4, model year 2023.
Sample size: 553 cars, 1,694 tests and 837 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: 553 cars
The 2023 MG 4 has an overall defect rate of 49 per 100 vehicles, which is significantly higher than the yearly average of 36 per 100, representing a 38% increase. Notably, the model excels in categories such as brakes, lights and electrics, body structure, equipment, and other defects, where it shows markedly lower failure rates compared to the average. However, it performs poorly in wheels, suspensions, and axles, with a defect rate of 87 compared to the average of 45. Additionally, there are trends indicating that as mileage increases, the defect rate for the MG 4 rises more sharply than the average car.
Cars by mileage segment
Total: 553 cars
Categories
Brakes
▲ 89.8% better
0.9 faults / 100 tests
Year avg: 8.8 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Excessive fluctuation in brake effort through each wheel revolution
Steering
▼ 33.3% worse
0.4 faults / 100 tests
Year avg: 0.3 / 100 tests
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
- EPS MIL indicating a system malfunction
Visibility
▼ 15.5% worse
6.7 faults / 100 tests
Year avg: 5.8 / 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
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
Lights & Electrics
▲ 65.5% better
3.0 faults / 100 tests
Year avg: 8.7 / 100 tests
- A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
- An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning
- The aim of a headlamp is not within limits laid down in the requirements
- Reflector: missing or reflecting white to the rear
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has only one lamp or all lamps not working
Wheels & Suspension
▼ 87.2% worse
86.5 faults / 100 tests
Year avg: 46.2 / 100 tests
- 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
- Tyre tread depth not in accordance with the requirements
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- Tyre tread depth not in accordance with the requirements
Body/Structure
▲ 90.0% better
0.1 faults / 100 tests
Year avg: 1.0 / 100 tests
- A bootlid, tailgate, dropside, loading door or access panel cannot be secured in the closed position
Equipment
▲ 38.5% better
0.8 faults / 100 tests
Year avg: 1.3 / 100 tests
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- Seat belt not functioning as intended or of an incorrect type
- Seat belt buckle missing, damaged or not functioning as intended
- A seat belt:
- A seat belt:
Other
▲ 63.6% better
0.4 faults / 100 tests
Year avg: 1.1 / 100 tests
- Any part of the noise suppression system: insecure
- 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: 476
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 77
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 60
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 40
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 31
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 22
Wiper blade: defective
MINOR
Occurrences: 17
The aim of a headlamp is not within limits laid down in the requirements
PRS
Occurrences: 14
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
PRS
Occurrences: 13
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 11
Serious faults (Top 10)
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 40
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 31
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 22
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 7
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 3
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 3
Reflector: missing or reflecting white to the rear
FAIL
Occurrences: 2
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 2
A seat belt:
FAIL
Occurrences: 1
EPS MIL indicating a system malfunction
FAIL
Occurrences: 1