DVSA Statistics
1978 Triumph Tr 7
MOT Pass Rate & Pre-MOT Checklist
There isn't much MOT data yet for the 1978 Triumph Tr 7 (only 7 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 7 DVSA anonymised MOT tests · About this data
Pass Rate
71.4%
About average
Limited data available for this model; results may be less representative.
Top Failure Reasons
Common MOT failures for this model
Quick DIY Fix
Headlight bulbs are a common MOT fail. Easy DIY replacement.
Based on DVSA statistics from 7 recorded tests.
Pre-MOT Checklist for 1978 Triumph Tr 7
Based on common failure points for this model, check these items before your MOT:
- 1
Test all headlights work and aim is correct - check for condensation inside
Lighting – Common fail on this model
- 2
Ensure engine is at operating temperature before test - take a good run beforehand
Emissions – Common fail on this model
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Frequently Asked Questions
Is a 1978 Triumph Tr 7 likely to fail its MOT?
Based on DVSA statistics, the 1978 Triumph Tr 7 has a 71.4% MOT pass rate. This is about average for vehicles of this age.
What are the most common MOT failures on a 1978 Triumph Tr 7?
The most common MOT failure reasons for a 1978 Triumph Tr 7 are: the strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired, headlamp reflector or lens slightly defective, emissions levels exceed default limits. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1978 Triumph Tr 7 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 seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired, headlamp reflector or lens slightly defective, emissions levels exceed default limits. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1978 Triumph Tr 7s fail their MOT?
Around 29% of 1978 Triumph Tr 7s fail their MOT test, meaning roughly 1 in 3 don't pass first time. The most common reasons are the strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired and headlamp reflector or lens slightly defective. Pre-checking these items can significantly improve your chances.
What should I check before my 1978 Triumph Tr 7 MOT?
Before your 1978 Triumph Tr 7 MOT, check these commonly-failed items: the strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired, headlamp reflector or lens slightly defective, emissions levels exceed default limits. 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 1978 Triumph Tr 7 reliable for MOT?
With a 71.4% MOT pass rate, the 1978 Triumph Tr 7 performs about average compared to typical vehicles. This is typical performance for vehicles in this age bracket.