Triumph Bonneville T120r MOT Pass Rate
Overall pass rate across all manufacture years, based on 82 real MOT test results. Failure rate: 6.1%.
Data from official DVSA MOT testing records
Triumph Bonneville T120r MOT Reliability Overview
The Triumph Bonneville T120r is a rare vehicle in the UK, with 82 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 93.9% and a failure rate of 6.1%, which is well above the UK average of approximately 37%.
Based on this data, the Triumph Bonneville T120r earns a "Excellent" reliability rating. The average Triumph Bonneville T120r presents for MOT with approximately 9,693 miles on the clock.
The most common MOT failure for the Triumph Bonneville T120r is Motorcycle lighting and signalling, affecting 6.1% 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 lamps and reflectors at 2.4%. Motorcycle drive system rounds out the top three at 2.4%. 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 Lighting And Signalling | 6.1% | 5 |
| 2 | Motorcycle Lamps And Reflectors | 2.4% | 2 |
| 3 | Motorcycle Drive System | 2.4% | 2 |
| 4 | Motorcycle Steering And Suspension | 1.2% | 1 |
| 5 | Motorcycle Structure And Attachments | 1.2% | 1 |
Failures per 10,000 Miles
avg. 9,693 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 | 6.29 | 6.1% | 5 |
| Motorcycle lamps and reflectors | 2.52 | 2.4% | 2 |
| Motorcycle drive system | 2.52 | 2.4% | 2 |
| Motorcycle steering and suspension | 1.26 | 1.2% | 1 |
| Motorcycle structure and attachments | 1.26 | 1.2% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Triumph Bonneville T120r has 9,693 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 Bonneville T120r has a mileage-adjusted failure rate of 6.29% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Triumph Bonneville T120r MOT Data
The Triumph Bonneville T120r is a rare vehicle in the UK, with 82 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 93.9% and a failure rate of 6.1%, which is well above the UK average of approximately 37%.
For Triumph Bonneville T120r 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 lamps and reflectors 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 Bonneville T120r is likely to perform.
Motorcycle lighting and signalling — 6.1% of failures
Motorcycle lighting and signalling issues account for 6.1% of MOT failures on the Triumph Bonneville T120r. 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 lamps and reflectors — 2.4% of failures
Motorcycle lamps and reflectors issues account for 2.4% of MOT failures on the Triumph Bonneville T120r. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Motorcycle drive system — 2.4% of failures
Motorcycle drive system issues account for 2.4% of MOT failures on the Triumph Bonneville T120r. 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 Bonneville T120r?
Based on 82 (based on limited data) MOT tests in our database, the Triumph Bonneville T120r has an overall pass rate of 93.9% (6.1% fail rate).
What are the most common MOT failures on a Triumph Bonneville T120r?
The top 3 reasons a Triumph Bonneville T120r fails its MOT are: 1. Motorcycle lighting and signalling (6.1%), 2. Motorcycle lamps and reflectors (2.4%), 3. Motorcycle drive system (2.4%). Check these areas before booking your MOT.
Is the Triumph Bonneville T120r reliable?
With a 6.1% MOT failure rate, the Bonneville T120r is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Triumph Bonneville T120r?
Based on failure data, focus on: Motorcycle lighting and signalling (6.1%); Motorcycle lamps and reflectors (2.4%); Motorcycle drive system (2.4%). 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.