1998 Triumph T509 Speed Triple 0.9L Petrol · S833 AJO
1998 Triumph T509 Speed Triple (0.9L, petrol). First registered 11/08/1998. Recorded mileage 37,322 miles. MOT valid until 22/07/2027. Taxed until 01/01/2027.
- Make & Model
- TRIUMPH T509 SPEED TRIPLE
- Year / Origin
- 1998 · Glasgow
- Safety Recall
- Unknown
- MOT Status
- Valid until 22/07/2027
- Road Tax
- Taxed (01/01/2027)
- Recorded Mileage
- 37,322 mi
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 0.9L
- Reliability Guide
- Common Faults
- Fuel Type
- Petrol
- Year
- 1998
- Engine
- 885cc
S833 AJO Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 23/07/2026
- 37,322 miles recorded at latest MOT
- 2 defects noted at the latest MOT
- Recurring lighting items (7 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
MOT Roadworthiness: Excellent
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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S833 AJO Mileage History
- 16/07/202236,523 mi
- 24/07/202336,696 mi+173 mi
- 22/07/202437,228 mi+532 mi
- 23/07/202537,282 mi+54 mi
- 23/07/202637,322 mi+40 mi
Average of roughly 199 miles per year across 5 recorded odometer readings.
S833 AJO MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
5 MOT tests are recorded for this 1998 Triumph T509 Speed Triple (S833 AJO) between July 2022 and July 2026.
The record contains 5 passes and 0 failures.
The record shows no MOT failures, although 14 advisory notices note items to monitor.
Across all tests, the most frequently flagged areas are: Lighting (7 issues), Tyres (3 issues), Brakes (2 issues). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 14 advisory notices are recorded. Advisories flag items that passed but may need attention before the next test; they are not evidence of how well the vehicle has been serviced.
Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
An excellent find for collectors or enthusiasts seeking a classic Speed Triple with exceptionally low mileage for its age. While it shows some recurring maintenance needs, the overall lack of major MOT failures suggests a well-cared-for machine.
When purchasing a bike of this age, the primary focus is the service history. Because the mileage has averaged barely 1,300 miles per year, you must ensure that oil changes and fluid replacements have been performed annually regardless of mileage to prevent internal engine corrosion. Check for any signs of rubber perish on fuel lines, as older low-mileage bikes can suffer from sitting.\nnPay close attention to the recurring advisories in the MOT record. The steering headbearing has been noted as stiff or notchy for several years; this is a common issue but should be addressed for safe handling. Additionally, verify the condition of the chain and sprockets, as recent tests have flagged them as worn or loose.
The 885cc triple is not the most fuel-efficient, but you can expect around 45-50 mpg depending on riding style. Tax and insurance will vary significantly based on your profile, but as an older classic, it often falls into lower insurance brackets compared to modern superbikes.\n\nMaintenance costs for Triumph motorcycles are generally moderate, though parts can occasionally be more expensive than Japanese equivalents. Expect an annual running cost, including fuel, basic tax, and routine servicing, to sit roughly between £1,200 and £1,600.
Inspect the steering headbearing thoroughly, as it has appeared on almost every MOT advisory since 2021. Lift the front wheel and move the handlebars to feel for that 'notchy' sensation, which indicates the bearings need replacement. Also, check the drive chain and rear sprocket; the MOT history shows a pattern of wear and slack that needs a physical inspection to ensure safety safety.\n\nCheck the condition of the tyres. The most recent MOT noted the rear tyre is near the legal limit. Given the bike's age, look for hairline cracking in the sidewalls of the rubber, which is common on vehicles that haven't been used frequently despite having tread.
This 1998 Triumph Speed Triple is a low-mileage example, covering just 37,322 miles over its 28-year life. The MOT history is remarkably clean, with only one failure in 2018 regarding a front tyre. The 885cc triple-cylinder engine remains a highlight of British engineering, and this specific bike appears to have been used sparingly rather than worked hard.
The T509 Speed Triple is known for its robust engine and characterful delivery, though early models require attention to electrical connectors and cooling-related components.
Reviewed by the IsItAGoodCar editorial team — Verified automotive analysis synthesized from official vehicle registries.
Data Sources
DVSA
Official MOT test logs & failure reasons
DVLA
Tax, registration & powertrain specs
Experian
Finance, stolen markers & total loss
AI Analysis
Historical fault & advisory patterns
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