2009 Triumph Bonneville America 865 0.9L Petrol · WA09 DFE

The most recent MOT test on 21 May 2026 resulted in a pass, although it carries a recurring advisory for a slight engine oil leak. Reviewing the history since 2020, the maintenance trend appears stagnant rather than improving. While the vehicle consistently passes its tests, the repeated appearance of the same oil leak and a prolonged period where the rear tyre was flagged as worn close to the legal limit suggests a reactive approach to maintenance. The 2024 failure due to a melted headlamp lens further indicates a lapse in preventative checks, though the subsequent pass confirms the issue was rectified. The recorded mileage of 17,682 miles over a seventeen year period is exceptionally low, averaging approximately 1,040 miles per year. While this suggests minimal wear on the internal engine components and drivetrain, such low usage often indicates long periods of standing. For a motorcycle, this is frequently more detrimental than higher mileage, as it can lead to the degradation of rubber seals, the accumulation of moisture in the fuel system, and the perishing of tyres and suspension bushes due to lack of regular movement and heat cycles. Prospective buyers should pay close attention to the persistent oil leak from the rocker cover, which has been noted in nearly every inspection since 2021. A physical inspection should be conducted to identify if the leak is a minor seep or a more significant weep that could contaminate the exhaust headers or rear brake assembly. During a test drive, the buyer should listen for any abnormal engine noise and check for a burning oil smell once the engine reaches operating temperature. Furthermore, given the history of rear tyre wear advisories, the current tyres must be checked not only for tread depth but for sidewall cracking and date codes to ensure the rubber has not hardened or perished. Due to the low annual mileage, several age-related checks are essential. Inspect the brake discs for surface corrosion or pitting and ensure the calipers are not binding, which is common in vehicles that stand for long periods. The 12V battery health should be verified, as infrequent use often leads to premature failure. Finally, the service history should be scrutinised to confirm that engine oil and other critical fluids have been changed based on calendar intervals rather than mileage, as oil degrades over time regardless of distance travelled, potentially leading to internal sludge or corrosion.