DVSA Statistics
1966 Triumph Tr4a
MOT Pass Rate & Pre-MOT Checklist
There isn't much MOT data yet for the 1966 Triumph Tr4a (only 45 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 45 DVSA anonymised MOT tests · About this data
Pass Rate
91.1%
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
Headlight bulbs are a common MOT fail. Easy DIY replacement.
Based on DVSA statistics from 45 recorded tests.
Pre-MOT Checklist for 1966 Triumph Tr4a
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
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
Check wiper blades for wear, cracks, and smearing - replace if damaged
Visibility – 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 Triumph Tr4a.
Frequently Asked Questions
Is a 1966 Triumph Tr4a likely to fail its MOT?
Based on DVSA statistics, the 1966 Triumph Tr4a has a 91.1% 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 1966 Triumph Tr4a?
The most common MOT failure reasons for a 1966 Triumph Tr4a are: a headlamp or light source missing, inoperative or more than â½ not functioning in the case of led, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 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 1966 Triumph Tr4a fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: a headlamp or light source missing, inoperative or more than â½ not functioning in the case of led, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 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 1966 Triumph Tr4as fail their MOT?
Around 9% of 1966 Triumph Tr4as fail their MOT test, meaning roughly 1 in 11 don't pass first time. The most common reasons are a headlamp or light source missing, inoperative or more than â½ not functioning in the case of led 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 1966 Triumph Tr4a MOT?
Before your 1966 Triumph Tr4a MOT, check these commonly-failed items: a headlamp or light source missing, inoperative or more than â½ not functioning in the case of led, fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 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 1966 Triumph Tr4a reliable for MOT?
With a 91.1% MOT pass rate, the 1966 Triumph Tr4a performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.