Mg ZS - 2004
315.9 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 ZS, model year 2004.
Sample size: 377 cars, 768 tests and 2,426 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: 377 cars
The 2004 MG ZS shows an overall defect rate of 316 defects per 100 vehicles, which is 17% lower than the average for its year at 382 defects per 100. This model stands out positively in categories such as steering, visibility, and lights and electrics, showing significantly lower defect rates compared to the average. However, it performs worse in the body and structure category, with a defect rate of 83%, notably higher than the 62% average. Additionally, the defect rate tends to increase with higher mileage, particularly in the 124,000+ mile segment. Overall, while the MG ZS fares better in several key areas, it has notable weaknesses that should be considered by potential buyers.
Cars by mileage segment
Total: 377 cars
Categories
Brakes
▲ 11.6% better
145.1 faults / 100 tests
Year avg: 164.2 / 100 tests
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Significant brake effort recorded with no brake applied indicating a binding brake
- Brake disc or drum: significantly and obviously worn
- Brake pipe damaged or excessively corroded
- Brake lining or pad: worn below 1.5mm
Steering
▲ 73.9% better
6.5 faults / 100 tests
Year avg: 24.9 / 100 tests
- Power steering fluid leaking or system malfunctioning
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
- The strength or continuity of the load bearing structure within 30cm of any steering component mounting (a ‘prescribed area’): is significantly reduced or inadequately repaired
- A steering ball joint: with excessive wear or free play
- A steering ball joint: with excessive wear or free play
Visibility
▲ 25.3% better
21.9 faults / 100 tests
Year avg: 29.3 / 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
- A bonnet: which cannot be safely secured in the closed position
- Wiper blade: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 37.4% better
68.8 faults / 100 tests
Year avg: 109.9 / 100 tests
- Headlamp reflector or lens: slightly defective
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
- Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow
- Beam image obviously incorrect
- Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
Wheels & Suspension
▲ 18.3% better
255.7 faults / 100 tests
Year avg: 312.9 / 100 tests
- A suspension pin, bush, joint or bearing: excessively worn
- The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
- A suspension component: excessively damaged or corroded
- Tyre tread depth not in accordance with the requirements
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▼ 30.2% worse
82.8 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
- 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: missing, split, insecure or no longer prevents the ingress of dirt
Equipment
▲ 9.4% better
12.5 faults / 100 tests
Year avg: 13.8 / 100 tests
- Audible warning:
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
- is significantly reduced or The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a ’prescribed area’): inadequately repaired
- An SRS malfunction indicator lamp (MIL) indicates a system malfunction
Other
▲ 23.8% better
38.5 faults / 100 tests
Year avg: 50.5 / 100 tests
- Engine MIL inoperative or indicating a malfunction
- Exhaust noise levels in excess of those permitted
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Emissions test unable to be completed
- Lambda coefficient outside the default limits or the range specified by the manufacturer
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 233
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 124
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
ADVISORY
Occurrences: 115
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 115
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 113
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 103
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 89
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 83
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 67
A transmission shaft constant velocity joint boot: severely deteriorated
MINOR
Occurrences: 66
Serious faults (Top 10)
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 67
A transmission shaft constant velocity joint boot: missing, split, insecure or no longer prevents the ingress of dirt
FAIL
Occurrences: 39
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 33
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 30
Significant brake effort recorded with no brake applied indicating a binding brake
FAIL
Occurrences: 30
Beam image obviously incorrect
FAIL
Occurrences: 27
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 20
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 20
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 18
Exhaust system has a major leak or is insecure
FAIL
Occurrences: 17