DVSA Statistics
1971 MG B
MOT Pass Rate & Pre-MOT Checklist
Used 1971 MG Bs usually pass their MOT, but around 1 in 5 still fail, most often for a wheel bearing with excessive play, 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. and steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc. Based on 276 MOT tests from DVSA data, this page shows how this model performs and what to check before your test.
Pass Rate
Based on 276 DVSA anonymised MOT tests · About this data
Pass Rate
81.5%
Higher than average
Top Failure Reasons
Common MOT failures for this model
Parts Available
Brakes are a common wear item.
Based on DVSA statistics from 276 recorded tests.
Pre-MOT Checklist for 1971 MG B
Based on common failure points for this model, check these items before your MOT:
- 1
Test brakes for effectiveness, pull, and unusual noises when driving
Brakes – Common fail on this model
- 2
Check for excessive play in steering wheel - should be minimal free movement
Steering – Common fail on this model
- 3
Listen for knocks or clunks when driving over bumps - bounce each corner
Suspension – Common fail on this model
- 4
Test all headlights work and aim is correct - check for condensation inside
Lighting – Common fail on this model
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Frequently Asked Questions
Is a 1971 MG B likely to fail its MOT?
Based on DVSA statistics, the 1971 MG B has a 81.5% MOT pass rate. This is above average, indicating good reliability for a vehicle of this age.
What are the most common MOT failures on a 1971 MG B?
The most common MOT failure reasons for a 1971 MG B are: a wheel bearing with excessive play, 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., steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1971 MG B fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: a wheel bearing with excessive play, 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., steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1971 MG Bs fail their MOT?
Around 19% of 1971 MG Bs fail their MOT test, meaning roughly 1 in 5 don't pass first time. The most common reasons are a wheel bearing with excessive play and 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.. Pre-checking these items can significantly improve your chances.
What should I check before my 1971 MG B MOT?
Before your 1971 MG B MOT, check these commonly-failed items: a wheel bearing with excessive play, 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., steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc. Most are visual checks you can do at home – look for worn tyres, test all lights work, and check for obvious damage or leaks.
Is the 1971 MG B reliable for MOT?
With a 81.5% MOT pass rate, the 1971 MG B performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.