2009 Triumph Thunderbird 1.7L Petrol · GR05 CUB

The Triumph Thunderbird presents a stable and improving maintenance trend, culminating in a clean pass on 27 May 2026 at 23,214 miles with zero defects recorded. That result is the most recent MOT entry, sitting just three weeks before today's date, and it confirms the bike currently meets all DVSA roadworthiness standards. The trajectory over the past five years shows a clear resolution of the only advisory the bike has ever carried, indicating attentive ownership and consistent mechanical care. The mileage pattern tells a story of very light use. Between the June 2021 test at 21,599 miles and the July 2022 test at 21,618 miles, the bike covered only 19 miles in roughly thirteen months, suggesting a prolonged period of storage or near-total inactivity. From July 2022 through the May 2026 test, the odometer moved from 21,618 to 23,214 miles, a gain of 1,596 miles over nearly four years. That equates to roughly 400 miles per year in the most recent period, which is exceptionally low even for a machine averaging 1,366 miles annually across its full life. The sparse testing intervals, with a notable gap between February 2025 and May 2026, reinforce the picture of a bike that sits for long stretches between short rides. The sole defect in the entire history was a light oil misting on the offside front shock absorber, flagged on 1 June 2021 at 21,599 miles. That advisory has not reappeared in any subsequent test, meaning the fork seal issue was either repaired or the misting never progressed to an active leak. A buyer should still inspect the fork stanchions in person for scoring or residual oil, as machines that stand for extended periods can develop seal deterioration that a brief MOT ride may not fully reveal. The rear suspension, swingarm pivot, and head stem bearings deserve close attention given the long stationary intervals, as lack of use can cause grease to settle and bearings to develop flat spots or corrosion. Tyre condition and brake component health are the primary consumables to verify. A bike covering so few miles may still have original or aged rubber that looks serviceable but has hardened past its safe working life. Check the date codes on both tyres and inspect the brake discs for surface corrosion, which is common on machines that sit unused. The clean MOT record is encouraging, but the low and irregular usage pattern means a hands-on inspection of rubber components, fluid condition, and bearing play is essential before purchase.