Triumph T509 Speed Triple (1997)
1997 Triumph T509 Speed Triple
CarHunch analysed 155 real MOT records for the 1997 Triumph T509 Speed Triple. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 1997 Triumph Speed Triple has a first-time MOT pass rate of 60.5%, significantly below the UK average of 80%, which signals reliability concerns for buyers considering this nearly 30-year-old machine. With 11.6% of vehicles having recorded dangerous defects, you're looking at a notably higher risk profile than modern bikes—steering, braking, or structural issues are real possibilities on examples in this age range.
These Speed Triples are running at a sensible median mileage of 22,923 miles for their age, suggesting many have been garage queens or ridden sparingly, yet they still average 1.15 failures and 4.3 advisories per test, pointing to wear and corrosion that age inevitably brings. Before buying, insist on a full pre-purchase inspection by a Triumph specialist, paying particular attention to frame cracks, brake condition, and electrical gremlins, as preventive work on a machine this old will be far cheaper than reactive repairs.
What to check before buying a 1997 Triumph T509 Speed Triple
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Triumph T509 Speed Triple
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (99%) | 153 | 60.1% | 1.16 |
| Other (1%) | 2 | 94.4% | 0.5 |
Mileage Distribution
Most 1997 Triumph T509 Speed Triple vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 1997 Triumph T509 Speed Triple vehicles fall between 15,514 and 34,431 miles.
1997 Triumph T509 Speed Triple — Still on the Road
Numbers are declining — 26 vehicles still getting MOTs in 2025 (48% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
MOT History Averages
Found a specific Triumph T509 Speed Triple?
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