2017 Triumph Bonneville 1.2L Petrol · GD17 COA

The maintenance trend for this 2017 Triumph Bonneville remains entirely stable, demonstrating consistent mechanical health across its lifespan. The most recent MOT test on 7 April 2025 at 3,898 miles passed without a single defect recorded. This clean bill of health indicates the motorcycle has required no remedial mechanical work or structural repairs to meet roadworthiness standards. The absence of advisories or failures suggests a diligent approach to basic upkeep, with no recurring mechanical or structural issues developing over time. The recorded mileage reveals exceptionally low usage for a nine-year-old machine, averaging just 433 miles annually. Looking at the chronological data, the motorcycle covered 402 miles between the July 2021 test at 2,835 miles and the July 2022 test at 3,237 miles. Usage dropped significantly thereafter, with only 64 miles added between the July 2023 test at 3,505 miles and the April 2024 test at 3,569 miles. The subsequent year saw slightly more activity, accumulating 329 miles by the April 2025 test at 3,898 miles. This sporadic accumulation points to prolonged periods of standing rather than regular, sustained riding. Despite the flawless MOT record, the low and sporadic mileage warrants a focused physical inspection on components susceptible to deterioration from inactivity. A buyer should closely examine the tyre sidewalls for age-related cracking and perishing, as tread depth may remain legal while the rubber compound degrades from lack of use. Brake systems demand particular scrutiny; discs may exhibit surface corrosion and calipers could potentially bind if the pistons have seized from standing. Suspension seals and fork stanchions might show signs of weeping or pitting, while the fuel system and injectors could suffer from stale fuel residue. Verifying the structural integrity of the frame and checking for any corrosion in the exhaust system remains essential, as standing motorcycles often suffer from moisture ingress in hard-to-reach areas. The battery condition and charging system output also require testing, given the likelihood of frequent short runs or extended dormancy that can degrade cell health. A thorough in-person assessment of these specific areas will confirm whether the mechanical reality matches the pristine paperwork.