DVSA Statistics
1974 MG Mgb
MOT Pass Rate & Pre-MOT Checklist
There isn't much MOT data yet for the 1974 MG Mgb (only 26 tests in our DVSA dataset), so these figures are a rough guide. We still highlight common failure items below so you can check before your MOT.
Pass Rate
Based on 26 DVSA anonymised MOT tests · About this data
Pass Rate
84.6%
Higher than average
Limited data available for this model; results may be less representative.
Top Failure Reasons
Common MOT failures for this model
Quick DIY Fix
Windscreen wipers are easy to replace yourself.
Based on DVSA statistics from 26 recorded tests.
Pre-MOT Checklist for 1974 MG Mgb
Based on common failure points for this model, check these items before your MOT:
- 1
Check windscreen for chips or cracks in the driver view zone (Zone A)
Visibility – Common fail on this model
- 2
Test brakes for effectiveness, pull, and unusual noises when driving
Brakes – Common fail on this model
- 3
Check exhaust for leaks, holes, or excessive corrosion - listen for blowing
Exhaust – Common fail on this model
- 4
Push down on each corner and release - car should bounce once only
Suspension – Common fail on this model
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Frequently Asked Questions
Is a 1974 MG Mgb likely to fail its MOT?
Based on DVSA statistics, the 1974 MG Mgb has a 84.6% 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 1974 MG Mgb?
The most common MOT failure reasons for a 1974 MG Mgb are: windscreen washers not working or not providing sufficient fluid to clear the windscreen, parking brake lever has excessive movement indicating incorrect adjustment, exhaust system leaking or insecure. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1974 MG Mgb fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: windscreen washers not working or not providing sufficient fluid to clear the windscreen, parking brake lever has excessive movement indicating incorrect adjustment, exhaust system leaking or insecure. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1974 MG Mgbs fail their MOT?
Around 15% of 1974 MG Mgbs fail their MOT test, meaning roughly 1 in 7 don't pass first time. The most common reasons are windscreen washers not working or not providing sufficient fluid to clear the windscreen and parking brake lever has excessive movement indicating incorrect adjustment. Pre-checking these items can significantly improve your chances.
What should I check before my 1974 MG Mgb MOT?
Before your 1974 MG Mgb MOT, check these commonly-failed items: windscreen washers not working or not providing sufficient fluid to clear the windscreen, parking brake lever has excessive movement indicating incorrect adjustment, exhaust system leaking or insecure. 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 1974 MG Mgb reliable for MOT?
With a 84.6% MOT pass rate, the 1974 MG Mgb performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.