Mg B - 1975
149.0 faults per 100 tests
Year average for all cars of 1975 is 119.3 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mg B, model year 1975.
Sample size: 273 cars, 445 tests and 663 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: 273 cars
The 1975 MG B shows a higher overall defect rate, with 149 defects per 100 vehicles, compared to the yearly average of 119. The model stands out negatively in categories such as brakes and visibility, where its defect rates exceed the average by over 20%. Furthermore, the MG B has significant issues in the wheels, suspensions, and axles category, as well as in body and other defects. However, it seems to perform better in lower mileage segments, indicating that defects become more pronounced as mileage increases. Overall, while the MG B presents some specific challenges, it does exhibit a notable trend of increasing defects with higher mileage.
Cars by mileage segment
Total: 273 cars
Categories
Brakes
▼ 20.5% worse
41.8 faults / 100 tests
Year avg: 34.7 / 100 tests
- Significant brake effort recorded with no brake applied indicating a binding brake
- Brakes imbalance across an axle such that: the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle. Or in the case of testing on the road, the vehicle deviates excessively from a straight lin
- Brakes imbalance across an axle such that: the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle. Or in the case of testing on the road, the vehicle deviates excessively from a straight lin
- Brake pipe damaged or excessively corroded
- Braking effort: inadequate at a wheel
Steering
▼ 5.1% worse
18.4 faults / 100 tests
Year avg: 17.5 / 100 tests
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
- Free play in the steering, measured at the rim of the steering wheel is: excessive to the extent that safe steering is affected
- 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.
- Free play in the steering, measured at the rim of the steering wheel is: excessive
Visibility
▼ 23.3% worse
14.8 faults / 100 tests
Year avg: 12.0 / 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
▼ 17.9% worse
38.2 faults / 100 tests
Year avg: 32.4 / 100 tests
- Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
- 4.3.1 (a) (iii)
- A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
- A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
- Beam image obviously incorrect
Wheels & Suspension
▼ 30.7% worse
111.5 faults / 100 tests
Year avg: 85.3 / 100 tests
- A suspension pin, bush, joint or bearing: excessively worn
- 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 wheel bearing: with excessive play
- A shock absorber damaged … or showing signs of severe leakage
Body/Structure
▼ 38.5% worse
25.2 faults / 100 tests
Year avg: 18.2 / 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
- A transmission: joint, belt or chain excessively worn
- Exhaust system has a major leak or is insecure
- Fuel system: leaking, or missing or ineffective filler cap
Equipment
▲ 10.8% better
5.8 faults / 100 tests
Year avg: 6.5 / 100 tests
- Audible warning:
- Seat belt buckle missing, damaged or not functioning as intended
- A seat belt:
- 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
Other
▼ 31.5% worse
42.2 faults / 100 tests
Year avg: 32.1 / 100 tests
- 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
- Emissions levels exceed default limits
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 83
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 65
A wheel bearing: with excessive play
ADVISORY
Occurrences: 40
Significant brake effort recorded with no brake applied indicating a binding brake
ADVISORY
Occurrences: 26
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 24
A shock absorber damaged … or showing signs of severe leakage
ADVISORY
Occurrences: 21
Steering rack gaiter or ball joint dust cover: damaged or deteriorated
MINOR
Occurrences: 20
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
ADVISORY
Occurrences: 17
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 17
Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
ADVISORY
Occurrences: 17
Serious faults (Top 10)
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 17
A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
FAIL
Occurrences: 12
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 11
Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
FAIL
Occurrences: 10
4.3.1 (a) (iii)
FAIL
Occurrences: 9
Emissions levels exceed default limits
FAIL
Occurrences: 8
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 8
Beam image obviously incorrect
FAIL
Occurrences: 7
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 7
Audible warning:
FAIL
Occurrences: 6