Triumph Chopper MOT Pass Rate
Overall pass rate across all manufacture years, based on 50 real MOT test results. Failure rate: 14.0%.
Data from official DVSA MOT testing records
Triumph Chopper MOT Reliability Overview
The Triumph Chopper is a rare vehicle in the UK, with 50 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 86.0% and a failure rate of 14.0%, which is well above the UK average of approximately 37%.
Based on this data, the Triumph Chopper earns a "Excellent" reliability rating. The average Triumph Chopper presents for MOT with approximately 8,839 miles on the clock.
The most common MOT failure for the Triumph Chopper is Motorcycle brakes, affecting 6.0% 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 2.0%. Motorcycle lighting and signalling rounds out the top three at 2.0%. 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
* 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 | 6.0% | 3 |
| 2 | Motorcycle Tyres And Wheels | 2.0% | 1 |
| 3 | Motorcycle Lighting And Signalling | 2.0% | 1 |
| 4 | Motorcycle Steering And Suspension | 2.0% | 1 |
| 5 | Motorcycle Reg Plates And Vin | 2.0% | 1 |
| 6 | Motorcycle Steering | 2.0% | 1 |
| 7 | Motorcycle Wheels | 2.0% | 1 |
| 8 | Motorcycle Lamps And Reflectors | 2.0% | 1 |
| 9 | Motorcycle Structure And Attachments | 2.0% | 1 |
Failures per 10,000 Miles
avg. 8,839 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 | 6.79 | 6.0% | 3 |
| Motorcycle tyres and wheels | 2.26 | 2.0% | 1 |
| Motorcycle lighting and signalling | 2.26 | 2.0% | 1 |
| Motorcycle steering and suspension | 2.26 | 2.0% | 1 |
| Motorcycle reg plates and vin | 2.26 | 2.0% | 1 |
| Motorcycle steering | 2.26 | 2.0% | 1 |
| Motorcycle wheels | 2.26 | 2.0% | 1 |
| Motorcycle lamps and reflectors | 2.26 | 2.0% | 1 |
| Motorcycle structure and attachments | 2.26 | 2.0% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Triumph Chopper has 8,839 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 Chopper has a mileage-adjusted failure rate of 15.84% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Triumph Chopper MOT Data
The Triumph Chopper is a rare vehicle in the UK, with 50 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 86.0% and a failure rate of 14.0%, which is well above the UK average of approximately 37%.
For Triumph Chopper 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 Chopper is likely to perform.
Motorcycle brakes — 6.0% of failures
Motorcycle brakes issues account for 6.0% of MOT failures on the Triumph Chopper. 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 — 2.0% of failures
Motorcycle tyres and wheels issues account for 2.0% of MOT failures on the Triumph Chopper. 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 lighting and signalling — 2.0% of failures
Motorcycle lighting and signalling issues account for 2.0% of MOT failures on the Triumph Chopper. 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.
Frequently Asked Questions
What is the MOT pass rate for the Triumph Chopper?
Based on 50 (based on limited data) MOT tests in our database, the Triumph Chopper has an overall pass rate of 86.0% (14.0% fail rate).
What are the most common MOT failures on a Triumph Chopper?
The top 3 reasons a Triumph Chopper fails its MOT are: 1. Motorcycle brakes (6.0%), 2. Motorcycle tyres and wheels (2.0%), 3. Motorcycle lighting and signalling (2.0%). Check these areas before booking your MOT.
Is the Triumph Chopper reliable?
With a 14.0% MOT failure rate, the Chopper is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Triumph Chopper?
Based on failure data, focus on: Motorcycle brakes (6.0%); Motorcycle tyres and wheels (2.0%); Motorcycle lighting and signalling (2.0%). 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.