DVSA Statistics
1975 Triumph Stag
MOT Pass Rate & Pre-MOT Checklist
Used 1975 Triumph Stags usually pass their MOT, but around 1 in 5 still fail, most often for the strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users and windscreen washers not working or not providing sufficient fluid to clear the windscreen. Based on 104 MOT tests from DVSA data, this page shows how this model performs and what to check before your test.
Pass Rate
Based on 104 DVSA anonymised MOT tests · About this data
Pass Rate
80.8%
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 104 recorded tests.
Pre-MOT Checklist for 1975 Triumph Stag
Based on common failure points for this model, check these items before your MOT:
- 1
Listen for knocks or clunks when driving over bumps - bounce each corner
Suspension – 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 all headlights work and aim is correct - check for condensation inside
Lighting – Common fail on this model
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Check your specific vehicle for outstanding advisories or recalls. Get a personalized risk report for your exact Triumph Stag.
Frequently Asked Questions
Is a 1975 Triumph Stag likely to fail its MOT?
Based on DVSA statistics, the 1975 Triumph Stag has a 80.8% 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 1975 Triumph Stag?
The most common MOT failure reasons for a 1975 Triumph Stag are: the strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, windscreen washers not working or not providing sufficient fluid to clear the windscreen. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1975 Triumph Stag fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: the strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, windscreen washers not working or not providing sufficient fluid to clear the windscreen. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1975 Triumph Stags fail their MOT?
Around 19% of 1975 Triumph Stags fail their MOT test, meaning roughly 1 in 5 don't pass first time. The most common reasons are the strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired and fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users. Pre-checking these items can significantly improve your chances.
What should I check before my 1975 Triumph Stag MOT?
Before your 1975 Triumph Stag MOT, check these commonly-failed items: the strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, windscreen washers not working or not providing sufficient fluid to clear the windscreen. 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 1975 Triumph Stag reliable for MOT?
With a 80.8% MOT pass rate, the 1975 Triumph Stag performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.