Triumph Tr25 MOT Pass Rate
Overall pass rate across all manufacture years, based on 94 real MOT test results. Failure rate: 4.3%.
Data from official DVSA MOT testing records
Triumph Tr25 MOT Reliability Overview
The Triumph Tr25 is a rare vehicle in the UK, with 94 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 95.7% and a failure rate of 4.3%, which is well above the UK average of approximately 37%.
Based on this data, the Triumph Tr25 earns a "Excellent" reliability rating. The average Triumph Tr25 presents for MOT with approximately 9,443 miles on the clock. The 1969 manufacture year performs best with a 97.1% pass rate.
The most common MOT failure for the Triumph Tr25 is Motorcycle lighting and signalling, affecting 4.3% of all tests. Motorcycle lighting and signalling issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. The second most common issue is Motorcycle body and structure at 1.1%. Together, these top 2 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
Pass Rate by Manufacture Year
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Lighting And Signalling | 4.3% | 4 |
| 2 | Motorcycle Body And Structure | 1.1% | 1 |
Failures per 10,000 Miles
avg. 9,443 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Motorcycle lighting and signalling | 4.51 | 4.3% | 4 |
| Motorcycle body and structure | 1.13 | 1.1% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Triumph Tr25 has 9,443 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Triumph Tr25 has a mileage-adjusted failure rate of 4.55% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Triumph Tr25 MOT Data
The Triumph Tr25 is a rare vehicle in the UK, with 94 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 95.7% and a failure rate of 4.3%, which is well above the UK average of approximately 37%.
For Triumph Tr25 owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle lighting and signalling and motorcycle body and structure for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Tr25 is likely to perform.
Motorcycle lighting and signalling — 4.3% of failures
Motorcycle lighting and signalling issues account for 4.3% of MOT failures on the Triumph Tr25. Motorcycle lighting and signalling issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Motorcycle body and structure — 1.1% of failures
Motorcycle body and structure issues account for 1.1% of MOT failures on the Triumph Tr25. Body and structure failures include excessive corrosion, sharp edges, loose panels, and damage to the vehicle frame. Rust is the primary concern, especially on older vehicles or those exposed to road salt. Typical repair costs: £100–500+. Pre-MOT check: Inspect sills, wheel arches, door bottoms, and the chassis for rust. Surface rust is acceptable but structural corrosion or holes will fail. Check that all doors, bonnet, and boot close securely.
Frequently Asked Questions
What is the MOT pass rate for the Triumph Tr25?
Based on 94 (based on limited data) MOT tests in our database, the Triumph Tr25 has an overall pass rate of 95.7% (4.3% fail rate).
What are the most common MOT failures on a Triumph Tr25?
The top 2 reasons a Triumph Tr25 fails its MOT are: 1. Motorcycle lighting and signalling (4.3%), 2. Motorcycle body and structure (1.1%). Check these areas before booking your MOT.
Is the Triumph Tr25 reliable?
With a 4.3% MOT failure rate, the Tr25 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Triumph Tr25?
Based on failure data, focus on: Motorcycle lighting and signalling (4.3%); Motorcycle body and structure (1.1%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.