Triumph T309 Trophy MOT Pass Rate
Overall pass rate across all manufacture years, based on 72 real MOT test results. Failure rate: 19.4%.
Data from official DVSA MOT testing records
Triumph T309 Trophy MOT Reliability Overview
The Triumph T309 Trophy is a rare vehicle in the UK, with 72 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 80.6% and a failure rate of 19.4%, which is well above the UK average of approximately 37%.
Based on this data, the Triumph T309 Trophy earns a "Excellent" reliability rating. The average Triumph T309 Trophy presents for MOT with approximately 23,893 miles on the clock. The 1997 manufacture year performs best with a 80.0% pass rate.
The most common MOT failure for the Triumph T309 Trophy is Motorcycle brakes, affecting 31.9% of all tests. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. The second most common issue is Motorcycle tyres and wheels at 9.7%. Motorcycle drive system rounds out the top three at 6.9%. Together, these top 3 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 Brakes | 31.9% | 23 |
| 2 | Motorcycle Tyres And Wheels | 9.7% | 7 |
| 3 | Motorcycle Drive System | 6.9% | 5 |
| 4 | Motorcycle Steering And Suspension | 6.9% | 5 |
| 5 | Motorcycle Lighting And Signalling | 4.2% | 3 |
| 6 | Motorcycle Structure And Attachments | 4.2% | 3 |
| 7 | Motorcycle Suspension | 1.4% | 1 |
| 8 | Motorcycle Tyres | 1.4% | 1 |
| 9 | Motorcycle Body And Structure | 1.4% | 1 |
| 10 | Motorcycle Lamps And Reflectors | 1.4% | 1 |
Failures per 10,000 Miles
avg. 23,893 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 brakes | 13.37 | 31.9% | 23 |
| Motorcycle tyres and wheels | 4.07 | 9.7% | 7 |
| Motorcycle drive system | 2.91 | 6.9% | 5 |
| Motorcycle steering and suspension | 2.91 | 6.9% | 5 |
| Motorcycle lighting and signalling | 1.74 | 4.2% | 3 |
| Motorcycle structure and attachments | 1.74 | 4.2% | 3 |
| Motorcycle suspension | 0.58 | 1.4% | 1 |
| Motorcycle tyres | 0.58 | 1.4% | 1 |
| Motorcycle body and structure | 0.58 | 1.4% | 1 |
| Motorcycle lamps and reflectors | 0.58 | 1.4% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Triumph T309 Trophy has 23,893 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 T309 Trophy has a mileage-adjusted failure rate of 8.12% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Triumph T309 Trophy MOT Data
The Triumph T309 Trophy is a rare vehicle in the UK, with 72 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 80.6% and a failure rate of 19.4%, which is well above the UK average of approximately 37%.
For Triumph T309 Trophy owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle brakes and motorcycle tyres and wheels 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 T309 Trophy is likely to perform.
Motorcycle brakes — 31.9% of failures
Motorcycle brakes issues account for 31.9% of MOT failures on the Triumph T309 Trophy. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Motorcycle tyres and wheels — 9.7% of failures
Motorcycle tyres and wheels issues account for 9.7% of MOT failures on the Triumph T309 Trophy. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Motorcycle drive system — 6.9% of failures
Motorcycle drive system issues account for 6.9% of MOT failures on the Triumph T309 Trophy. Motorcycle drive system 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.
Frequently Asked Questions
What is the MOT pass rate for the Triumph T309 Trophy?
Based on 72 (based on limited data) MOT tests in our database, the Triumph T309 Trophy has an overall pass rate of 80.6% (19.4% fail rate).
What are the most common MOT failures on a Triumph T309 Trophy?
The top 3 reasons a Triumph T309 Trophy fails its MOT are: 1. Motorcycle brakes (31.9%), 2. Motorcycle tyres and wheels (9.7%), 3. Motorcycle drive system (6.9%). Check these areas before booking your MOT.
Is the Triumph T309 Trophy reliable?
With a 19.4% MOT failure rate, the T309 Trophy is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Triumph T309 Trophy?
Based on failure data, focus on: Motorcycle brakes (31.9%); Motorcycle tyres and wheels (9.7%); Motorcycle drive system (6.9%). 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.