2008 Triumph Bonneville 0.9L Petrol · WA08 AEC

The Triumph Bonneville’s most recent MOT test on 2025-06-18 confirmed a pass with no recorded defects, though the immediate preceding test on 2025-06-06 resulted in a failure—despite identical mileage—without any noted issues. This abrupt reversal suggests either a temporary administrative error in the first test or a minor oversight in the second, though neither indicates a broader mechanical trend. The last two full passes occurred in May 2024 and September 2022, both clean of advisories or faults, implying consistent compliance with MOT standards during those periods. Without explicit defects, there is no evidence of worsening structural or drivetrain concerns, but the lack of advisories in recent tests also means no proactive warnings about impending wear. The recorded mileage of 34,333 miles over nearly 18 years—roughly 1,907 miles annually—is unusually low for a vehicle of this age, particularly given its classic status. The gap between tests in 2024 and 2022 (1,464 miles over 19 months) and the stagnant mileage since 2022 (just 2,541 miles in four years) raises questions about storage conditions or limited use. Such low mileage can mitigate some wear concerns, but it may also indicate prolonged periods of inactivity, which could accelerate issues like seized suspension components, degraded fluids, or corrosion in less frequently moved parts. The consistency in mileage between failed and passed tests in 2024 and 2025 further suggests the vehicle was not driven between those dates, potentially masking underlying problems. Given the sparse MOT history and lack of recorded defects, a buyer should prioritise an inspection of high-wear components that aren’t routinely tested. The absence of advisories in recent passes means no prior warnings about binding brakes, worn suspension bushes, or excessive corrosion, but these are still critical areas to examine. Focus on the rear brakes, which are often overlooked in classic bikes but critical for stopping power; check for uneven wear or glazed pads. Inspect the suspension for dried or leaking shock absorbers, particularly if the bike has been stored for extended periods, as this can lead to stiff or sagging coil springs. Corrosion is another concern—examine the frame rails, exhaust mounts, and fork tubes for pitting or structural weakening, especially if the bike has spent time in damp conditions. Finally, verify the electrical system, as intermittent failures (e.g., lighting, ignition) are common in older bikes and rarely flagged in MOTs unless severe.