Mg ZT - 2003
348.7 faults per 100 tests
Year average for all cars of 2003 is 380.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mg ZT, model year 2003.
Sample size: 551 cars, 1,162 tests and 4,052 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: 551 cars
The MG ZT from 2003 has an overall defect rate of 349 per 100 vehicles, which is 8% lower than the average car of the same year. Notably, the ZT performs significantly better in the Body/Structure category, with only 47 defects per 100 compared to the average of 63. It also excels in the "Other" category, showing a 49% improvement over the average. However, the defect rates vary across mileage segments, with the highest rate observed in the 0–31,000 miles range at 463 per 100, indicating potential early issues in newer vehicles. Overall, this model demonstrates strengths in structural integrity and additional categories compared to its peers.
Cars by mileage segment
Total: 551 cars
Categories
Brakes
▼ 7.4% worse
181.8 faults / 100 tests
Year avg: 169.3 / 100 tests
- Parking brake efficiency: below minimum requirement
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Brake pipe damaged or excessively corroded
- Brake lining or pad: worn below 1.5mm
- Brake pipe damaged or excessively corroded
Steering
▲ 15.9% better
21.2 faults / 100 tests
Year avg: 25.2 / 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
▲ 17.4% better
24.6 faults / 100 tests
Year avg: 29.8 / 100 tests
- 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
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
- Wiper blade: defective
Lights & Electrics
▲ 15.1% better
87.3 faults / 100 tests
Year avg: 102.8 / 100 tests
- Lamp emitted colour, position or intensity not in accordance with the requirements
- 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
Wheels & Suspension
▲ 2.7% better
294.0 faults / 100 tests
Year avg: 302.1 / 100 tests
- A suspension component: excessively damaged or corroded
- A suspension pin, bush, joint or bearing: excessively worn
- A suspension joint dust cover: severely deteriorated
- Tyre tread depth not in accordance with the requirements
- The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
Body/Structure
▲ 27.6% better
47.2 faults / 100 tests
Year avg: 65.2 / 100 tests
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
- Body, cab or chassis: excessively corroded at mounting points
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
- Exhaust system has a major leak or is insecure
- Exhaust system has a major leak or is insecure
Equipment
▼ 7.4% worse
14.6 faults / 100 tests
Year avg: 13.6 / 100 tests
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- 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
- 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
▲ 49.0% better
26.9 faults / 100 tests
Year avg: 52.7 / 100 tests
- Engine MIL inoperative or indicating a malfunction
- Emissions levels exceed default limits
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Smoke opacity levels exceed the manufacturer’s specified limit
- Emissions test unable to be completed
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: 370
A suspension component: excessively damaged or corroded
ADVISORY
Occurrences: 359
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 269
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 244
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 151
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
ADVISORY
Occurrences: 125
A suspension joint dust cover: severely deteriorated
MINOR
Occurrences: 117
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 110
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 108
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 87
Serious faults (Top 10)
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 66
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 62
Brake pipe damaged or excessively corroded
FAIL
Occurrences: 54
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
FAIL
Occurrences: 44
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 42
A suspension joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 41
Beam image obviously incorrect
FAIL
Occurrences: 39
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 34
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 27
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 25