At a Glance
No model-specific problems have been flagged for the Mg Magnette Mark III/IV — nothing on this generation occurs significantly more often than the UK average. The data still shows 64 common MOT failure types below. Brakes is the most common MOT failure category. Based on 767 MOT tests from DVSA data.
Problems are patterns in the DVSA data that occur significantly more often on this model than the UK average — confirmed at 99% statistical confidence. Read how we calculate MOT pass rates and problems →
Below: the full MOT-data picture for the Mg Magnette Mark III/IV — MOT pass rate vs the UK average, common problems vs UK fleet patterns, the most likely MOT failures by frequency, fault occurrence by mileage band, and pass/fail trends. All numbers drawn from DVSA records.
Mg Magnette Mark III/IV MOT Pass Rate
Across 767 MOT tests from DVSA data, the Mg Magnette Mark III/IV (1959–1968) has a fail rate of 18.9%.
All-time UK average fail rate: 34.9%
Tell Us About Your Problem
Help other Mg Magnette Mark III/IV owners — report a problem and we'll add it to the database
Tell Us About Your Problem
Help other Mg Magnette Mark III/IV owners — report a problem and we'll add it to the database
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Problems by mileage
Common problems, MOT failures and advisories on the Mg Magnette Mark III/IV, grouped by the mileage they typically appear at.
135 distinct problems · 829 total occurrences in current filter
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Advisory items are MOT tester observations. Frequency can be influenced by driving style and usage patterns.
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Other Mg Magnette Generations
ZA/ZB
1953–1958
2 problems
Mark III/IV
1959–1968
0 problems
Current page
Frequently Asked Questions
What are the most common Mg Magnette Mark III/IV problems?
Based on DVSA MOT data for the Mg Magnette Mark III/IV (1959–1968), we have identified 0 common problems. Brakes is the most common MOT failure category.
How reliable is the Mg Magnette Mark III/IV?
This generation has 767 MOT tests on record with a 18.9% fail rate. A fault is flagged as a "Common Problem" only when it occurs significantly more often on this model than the UK average, confirmed at 99% statistical confidence.
What commonly fails the MOT on a Mg Magnette Mark III/IV?
There are 64 distinct MOT failure types recorded for the Mark III/IV (1959–1968), grouped by the mileage these failures typically occur. See the Common MOT Failures section on this page.
Can I report a problem with my Mg Magnette Mark III/IV?
Yes — use the "Tell Us About Your Problem" form on this page. Your report helps other Mg Magnette owners spot problems early. All submissions are reviewed before being added to the public database.
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