2003 Triumph Bonneville T100 MOT Pass Rate
Pass rate for Bonneville T100 models manufactured in 2003, based on 1,128 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Bonneville T100 cars tested in 2003. Want to see how cars built in 2003 hold up over time?
View 2003 Triumph Bonneville T100 vintage page → (87.9% current pass rate)2003 Triumph Bonneville T100 MOT Analysis
The 2003 Triumph Bonneville T100 has an MOT pass rate of 87.6% based on 1,128 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 13,336 miles on the odometer. With a 12.4% failure rate, the 2003 Bonneville T100 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 2003 Triumph Bonneville T100 is Motorcycle brakes, responsible for 0.6% 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. Motorcycle structure and attachments is the second most common issue at 0.3%. Identification of the vehicle follows at 0.2%.
Top failures specific to 2003 models only. The overall Bonneville T100 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 | 0.6% | 7 |
| 2 | Motorcycle Structure And Attachments | 0.3% | 3 |
| 3 | Identification Of The Vehicle | 0.2% | 2 |
| 4 | Motorcycle Lamps And Reflectors | 0.2% | 2 |
| 5 | Motorcycle Steering | 0.2% | 2 |
| 6 | Motorcycle Suspension | 0.2% | 2 |
| 7 | Motorcycle Tyres | 0.1% | 1 |
Failures per 10,000 Miles
avg. 13,336 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 | 0.47 | 0.6% | 7 |
| Motorcycle structure and attachments | 0.20 | 0.3% | 3 |
| Identification of the vehicle | 0.13 | 0.2% | 2 |
| Motorcycle lamps and reflectors | 0.13 | 0.2% | 2 |
| Motorcycle steering | 0.13 | 0.2% | 2 |
| Motorcycle suspension | 0.13 | 0.2% | 2 |
| Motorcycle tyres | 0.07 | 0.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 2003 Triumph Bonneville T100 has an MOT pass rate of 87.6% based on 1,128 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 13,336 miles on the odometer. With a 12.4% failure rate, the 2003 Bonneville T100 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 2003 Triumph Bonneville T100, 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 13,336 miles, many of these vehicles are still in good mechanical condition.
Motorcycle brakes — 0.6% of failures
Motorcycle brakes issues account for 0.6% of MOT failures on 2003 Triumph Bonneville T100 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).
Motorcycle structure and attachments — 0.3% of failures
Motorcycle structure and attachments issues account for 0.3% of MOT failures on 2003 Triumph Bonneville T100 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.
Identification of the vehicle — 0.2% of failures
Identification of the vehicle issues account for 0.2% of MOT failures on 2003 Triumph Bonneville T100 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.