2020 Triumph Bonneville MOT Pass Rate
Pass rate for Bonneville models manufactured in 2020, based on 1,880 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Bonneville cars tested in 2020. Want to see how cars built in 2020 hold up over time?
View 2020 Triumph Bonneville vintage page → (93.2% current pass rate)2020 Triumph Bonneville MOT Analysis
The 2020 Triumph Bonneville has an MOT pass rate of 92.6% based on 1,880 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 4,768 miles on the odometer. With a 7.4% failure rate, the 2020 Bonneville is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2020 Triumph Bonneville is Motorcycle lamps and reflectors, responsible for 2.9% of failures. 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 range from £5–50. Motorcycle structure and attachments is the second most common issue at 0.7%. Motorcycle brakes follows at 0.7%.
Top failures specific to 2020 models only. The overall Bonneville page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Lamps And Reflectors | 2.9% | 54 |
| 2 | Motorcycle Structure And Attachments | 0.7% | 14 |
| 3 | Motorcycle Brakes | 0.7% | 13 |
| 4 | Identification Of The Vehicle | 0.4% | 8 |
| 5 | Motorcycle Tyres | 0.3% | 5 |
| 6 | Non-component Advisories | 0.2% | 3 |
| 7 | Motorcycle Audible Warning (Horn) | 0.1% | 1 |
| 8 | Motorcycle Steering | 0.1% | 1 |
Mileage Statistics
About This Data
The 2020 Triumph Bonneville has an MOT pass rate of 92.6% based on 1,880 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 4,768 miles on the odometer. With a 7.4% failure rate, the 2020 Bonneville is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2020 Triumph Bonneville, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle lamps and reflectors: 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. With relatively low average mileage of 4,768 miles, many of these vehicles are still in good mechanical condition.
Motorcycle lamps and reflectors — 2.9% of failures
Motorcycle lamps and reflectors issues account for 2.9% of MOT failures on 2020 Triumph Bonneville models. 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 structure and attachments — 0.7% of failures
Motorcycle structure and attachments issues account for 0.7% of MOT failures on 2020 Triumph Bonneville models. Motorcycle structure and attachments 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 brakes — 0.7% of failures
Motorcycle brakes issues account for 0.7% of MOT failures on 2020 Triumph Bonneville models. 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).
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.