Mg ZR - 2004
301.2 faults per 100 tests
Year average for all cars of 2004 is 384.6 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mg ZR, model year 2004.
Sample size: 732 cars, 1,461 tests and 4,401 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: 732 cars
The 2004 MG ZR has an overall defect rate of 301 per 100 vehicles, which is significantly better than the average of 382 per 100 vehicles, representing a 21% improvement. Notably, the MG ZR excels in categories such as brakes, visibility, and lights and electrics, with defect rates considerably lower than the average. However, it does face higher issues with steering and body structure compared to other vehicles of the same age. Additionally, as mileage increases, the defect rate for the MG ZR shows an upward trend, particularly in the higher mileage categories. Overall, while the MG ZR performs well in several areas, it has specific weaknesses that should be considered.
Cars by mileage segment
Total: 732 cars
Categories
Brakes
▲ 39.6% better
99.1 faults / 100 tests
Year avg: 164.2 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
Steering
▼ 48.6% worse
37.0 faults / 100 tests
Year avg: 24.9 / 100 tests
- Power steering fluid leaking or system malfunctioning
Visibility
▲ 27.0% better
21.4 faults / 100 tests
Year avg: 29.3 / 100 tests
Lights & Electrics
▲ 21.7% better
86.0 faults / 100 tests
Year avg: 109.9 / 100 tests
Wheels & Suspension
▲ 33.9% better
206.7 faults / 100 tests
Year avg: 312.9 / 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
- The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
- A suspension pin, bush, joint or bearing: excessively worn
- A spring: or spring component fractured or seriously weakened
Body/Structure
▼ 23.1% worse
78.3 faults / 100 tests
Year avg: 63.6 / 100 tests
- A transmission shaft constant velocity joint boot: severely deteriorated
- Exhaust system has a major leak or is insecure
Equipment
▼ 12.3% worse
15.5 faults / 100 tests
Year avg: 13.8 / 100 tests
Other
▼ 16.0% worse
58.6 faults / 100 tests
Year avg: 50.5 / 100 tests
- 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: 287
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 230
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
ADVISORY
Occurrences: 220
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 195
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 173
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 152
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 151
Power steering fluid leaking or system malfunctioning
ADVISORY
Occurrences: 130
A transmission shaft constant velocity joint boot: severely deteriorated
MINOR
Occurrences: 128
Exhaust system has a major leak or is insecure
ADVISORY
Occurrences: 118
Serious faults (Top 10)
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 84
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 78
Emissions levels exceed default limits
FAIL
Occurrences: 46
Significant brake effort recorded with no brake applied indicating a binding brake
FAIL
Occurrences: 38
A steering ball joint: with excessive wear or free play
FAIL
Occurrences: 38
Beam image obviously incorrect
FAIL
Occurrences: 36
Exhaust system has a major leak or is insecure
FAIL
Occurrences: 34
Emissions levels exceed the manufacturer’s specified limits
FAIL
Occurrences: 34
Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
FAIL
Occurrences: 32
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 32