2004 Triumph Bonneville America MOT Pass Rate
Pass rate for Bonneville America models manufactured in 2004, based on 778 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Bonneville America cars tested in 2004. Want to see how cars built in 2004 hold up over time?
View 2004 Triumph Bonneville America vintage page → (95.8% current pass rate)2004 Triumph Bonneville America MOT Analysis
The 2004 Triumph Bonneville America has an MOT pass rate of 85.6% based on 778 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 14,856 miles on the odometer. With a 14.4% failure rate, the 2004 Bonneville America is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2004 Triumph Bonneville America is Motorcycle brakes, responsible for 0.3% of failures. 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 range from £150–400. Identification of the vehicle is the second most common issue at 0.1%. Motorcycle structure and attachments follows at 0.1%.
Top failures specific to 2004 models only. The overall Bonneville America 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 Brakes | 0.3% | 2 |
| 2 | Identification Of The Vehicle | 0.1% | 1 |
| 3 | Motorcycle Structure And Attachments | 0.1% | 1 |
Failures per 10,000 Miles
avg. 14,856 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.
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| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Motorcycle brakes | 0.17 | 0.3% | 2 |
| Identification of the vehicle | 0.09 | 0.1% | 1 |
| Motorcycle structure and attachments | 0.09 | 0.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2004 Triumph Bonneville America has an MOT pass rate of 85.6% based on 778 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 14,856 miles on the odometer. With a 14.4% failure rate, the 2004 Bonneville America is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2004 Triumph Bonneville America, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle brakes: 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). With relatively low average mileage of 14,856 miles, many of these vehicles are still in good mechanical condition.
Motorcycle brakes — 0.3% of failures
Motorcycle brakes issues account for 0.3% of MOT failures on 2004 Triumph Bonneville America 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).
Identification of the vehicle — 0.1% of failures
Identification of the vehicle issues account for 0.1% of MOT failures on 2004 Triumph Bonneville America models. Identification failures relate to the Vehicle Identification Number (VIN) and registration plate. The VIN must be permanently displayed and legible, and the registration plate must meet British Standard formatting. Typical repair costs: £10–50. Pre-MOT check: Ensure the VIN plate is visible and legible (usually in the windscreen or under the bonnet). Check that number plates are clean, undamaged, and use the correct font and spacing.
Motorcycle structure and attachments — 0.1% of failures
Motorcycle structure and attachments issues account for 0.1% of MOT failures on 2004 Triumph Bonneville America 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.