2004 Suzuki GSX1400 1.4L Petrol · SP04 FWM

The latest MOT test for the 2004 Suzuki GSX1400, conducted on 2026-06-10, resulted in a clean pass with two advisories: a noisy exhaust system under 8.1.1 (a) and a front offside shock absorber exhibiting light oil misting under 5.3.2 (b). The overall maintenance trend over the past six years is stable, with no failures recorded in the last three MOTs and only recurring minor advisories—particularly the exhaust noise, which suggests either minor wear in the catalytic converter or exhaust manifold but does not currently affect roadworthiness. The front brake fluctuation advisory from 2024 remains a persistent but non-failing condition, indicating a potential issue with the anti-lock braking system (ABS) sensor or minor uneven brake pad wear, though it does not require immediate rectification. This consistency in advisories points to a vehicle that has been maintained within basic safety parameters, though further investigation into the mechanical causes of these issues would be prudent. The recorded mileage of 33,203 miles for a 22-year-old GSX1400 is exceptionally low, translating to approximately 1,509 miles per year—a rate that is far below what would be expected from typical motorcycle usage patterns. Such low mileage often reflects periods of inactivity, storage, or infrequent riding, which can lead to specific wear patterns and potential issues related to standing or infrequent operation. For example, standing for extended periods can cause brake discs to corrode, leading to binding calipers or uneven wear during acceleration. The suspension components, particularly the shock absorbers, may also show signs of dry rot or internal wear from lack of use, despite the recent oil misting advisory. Additionally, fluids such as the engine oil, coolant, and brake fluid degrade over time, even with minimal movement, so their condition should be closely scrutinised. As a prospective buyer, the first physical inspection should focus on the suspension system, especially the front offside shock absorber, which shows signs of oil leakage. Look for any visible cracks or bulges in the shock body, and listen for unusual noises during a test drive—particularly clunking or excessive bounce—when the motorcycle is subjected to rough terrain or sharp turns. The exhaust system’s recurring noise advisory suggests a potential issue with the catalytic converter or exhaust manifold, which may require a closer inspection for signs of overheating or blockage. During the test drive, check for a lack of power or reduced acceleration, as these could indicate restricted airflow or internal engine wear. For the brakes, examine the discs for signs of corrosion or uneven wear, particularly on the offside front, where the anti-lock braking system (ABS) sensor may be located. Listen for any grinding or squeaking noises when applying the brakes, and check for a pulsating or shuddering sensation, which could indicate warped discs or binding calipers. Given the vehicle’s age and low mileage, inspect the tyres for sidewall cracking or perishing, which can occur from prolonged exposure to UV light and temperature fluctuations. Additionally, verify the condition of the 12-volt battery, ensuring it holds a charge and does not show signs of corrosion on terminals. Lastly, since the vehicle has not been serviced within the last 12 months, consider checking the fluid levels—specifically the engine oil, coolant, and brake fluid—and ensuring they are within manufacturer specifications. If any of these fluids appear dark or contaminated, they should be replaced promptly to prevent further mechanical damage.