DVSA Statistics
1979 MG B
MOT Pass Rate & Pre-MOT Checklist
Used 1979 MG Bs usually pass their MOT, but around 1 in 6 still fail, most often for emissions levels exceed default limits, windscreen washers not working or not providing sufficient fluid to clear the windscreen 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.. Based on 147 MOT tests from DVSA data, this page shows how this model performs and what to check before your test.
Pass Rate
Based on 147 DVSA anonymised MOT tests · About this data
Pass Rate
82.3%
Higher than average
Top Failure Reasons
Common MOT failures for this model
Quick DIY Fix
Windscreen wipers are easy to replace yourself.
Based on DVSA statistics from 147 recorded tests.
Pre-MOT Checklist for 1979 MG B
Based on common failure points for this model, check these items before your MOT:
- 1
Ensure engine is at operating temperature before test - take a good run beforehand
Emissions – Common fail on this model
- 2
Check windscreen for chips or cracks in the driver view zone (Zone A)
Visibility – Common fail on this model
- 3
Test brakes for effectiveness, pull, and unusual noises when driving
Brakes – Common fail on this model
- 4
Check for excessive play in steering wheel - should be minimal free movement
Steering – Common fail on this model
Do you own this car?
Check your specific vehicle for outstanding advisories or recalls. Get a personalized risk report for your exact MG B.
Frequently Asked Questions
Is a 1979 MG B likely to fail its MOT?
Based on DVSA statistics, the 1979 MG B has a 82.3% 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 1979 MG B?
The most common MOT failure reasons for a 1979 MG B are: emissions levels exceed default limits, windscreen washers not working or not providing sufficient fluid to clear the windscreen, 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.. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1979 MG B fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: emissions levels exceed default limits, windscreen washers not working or not providing sufficient fluid to clear the windscreen, 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.. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1979 MG Bs fail their MOT?
Around 18% of 1979 MG Bs fail their MOT test, meaning roughly 1 in 6 don't pass first time. The most common reasons are emissions levels exceed default limits and windscreen washers not working or not providing sufficient fluid to clear the windscreen. Pre-checking these items can significantly improve your chances.
What should I check before my 1979 MG B MOT?
Before your 1979 MG B MOT, check these commonly-failed items: emissions levels exceed default limits, windscreen washers not working or not providing sufficient fluid to clear the windscreen, 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.. 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 1979 MG B reliable for MOT?
With a 82.3% MOT pass rate, the 1979 MG B performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.