Mg ZT - 2004
283.4 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 ZT, model year 2004.
Sample size: 860 cars, 1,870 tests and 5,299 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: 860 cars
The 2004 MG ZT shows an overall defect rate of 283 per 100 vehicles, which is significantly lower than the average of 382 per 100, positioning it 26% better than its peers. Notably, the MG ZT performs exceptionally well in visibility and lights and electrics, with a 45% and 39% lower defect rate compared to the average, respectively. Mileage trends indicate that defect rates increase at higher mileages, particularly in the 93,000 to 124,000 miles category, but overall, the model stands out positively in several key areas, demonstrating greater reliability than the average car of its year.
Cars by mileage segment
Total: 860 cars
Categories
Brakes
▲ 12.7% better
143.3 faults / 100 tests
Year avg: 164.2 / 100 tests
- Brake pipe damaged or excessively corroded
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Parking brake efficiency: below minimum requirement
- Brake lining or pad: worn below 1.5mm
- Brake pipe damaged or excessively corroded
Steering
▲ 4.8% better
23.7 faults / 100 tests
Year avg: 24.9 / 100 tests
- A steering ball joint: with excessive wear or free play
- A steering ball joint: with excessive wear or free play
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
- Power steering fluid leaking or system malfunctioning
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 46.1% better
15.8 faults / 100 tests
Year avg: 29.3 / 100 tests
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: defective
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
Lights & Electrics
▲ 39.9% better
66.1 faults / 100 tests
Year avg: 109.9 / 100 tests
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
- Lamp emitted colour, position or intensity not in accordance with the requirements
- Beam image obviously incorrect
- Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow
- Headlamp reflector or lens: slightly defective
Wheels & Suspension
▲ 23.1% better
240.7 faults / 100 tests
Year avg: 312.9 / 100 tests
- A suspension component: excessively damaged or corroded
- 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
- Tyre tread depth not in accordance with the requirements
- A suspension pin, bush, joint or bearing: excessively worn
Body/Structure
▲ 39.2% better
38.7 faults / 100 tests
Year avg: 63.6 / 100 tests
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
- Exhaust system has a major leak or is insecure
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
- Exhaust system has a major leak or is insecure
- Body, cab or chassis: excessively corroded at mounting points
Equipment
▼ 4.3% worse
14.4 faults / 100 tests
Year avg: 13.8 / 100 tests
- 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
- Seat belt buckle missing, damaged or not functioning as intended
- 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
- A seat belt: webbing or flexible stalk significantly stretched or weakened
Other
▲ 52.7% better
23.9 faults / 100 tests
Year avg: 50.5 / 100 tests
- Engine MIL inoperative or indicating a malfunction
- Emissions levels exceed the manufacturer’s specified limits
- 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
- Emissions levels exceed default limits
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 503
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 451
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 369
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 308
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 213
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 204
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
ADVISORY
Occurrences: 166
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 165
Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
ADVISORY
Occurrences: 137
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 122
Serious faults (Top 10)
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 83
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 77
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 67
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 63
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 61
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 54
Beam image obviously incorrect
FAIL
Occurrences: 36
A steering ball joint: with excessive wear or free play
FAIL
Occurrences: 35
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 30
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 30