1980 Suzuki GS850 0.8L Petrol · DMW 664V

The most recent DVSA MOT, carried out on 24 March 2022, resulted in a failure. Although the test recorded a number of advisories – front‑suspension shock absorbers showing light oil mist, a centrally binding rear brake, a loose off‑side footrest and an insecure central fuel tank – the presence of a PRS (dangerous) item for the fuel tank means the vehicle was not deemed road‑worthy at that time. With only a single MOT entry available, the trend cannot be plotted over several years, but the failure indicates that the current state of maintenance is insufficient and that remedial work is required before the car can be considered reliable for regular use. At 531 miles recorded on a 46‑year‑old 1980 Suzuki GS850 the average annual distance is roughly twelve miles, which is exceptionally low. Such a usage pattern suggests the motorcycle has spent the majority of its life in storage or on very occasional rides. While low mileage reduces wear on wear‑items such as clutch plates, brake shoes and tyre tread, it also means that components which rely on regular operation – for example rubber bushings, seals and the battery – may have deteriorated through age rather than use. Prolonged periods of standing can lead to corrosion of metal parts, drying of lubricants and the development of flat‑spotting on tyres if they have been left under load for years. The recurring advisories point to several areas that demand immediate inspection. The front shock absorbers should be examined for oil leakage, loss of damping performance and worn bushings; any clunking, excessive bounce or uneven ride height on a short test drive would confirm deterioration and likely necessitate replacement. The central rear brake’s binding condition must be checked by feeling for a firm, gritty pedal and by observing whether the wheel drags when stationary; a binding caliper can cause premature pad wear and overheating, so the caliper pistons, pins and brake fluid should be serviced or the system flushed. The off‑side footrest, being slightly loose and bent, should be tightened or replaced to prevent it from catching on clothing or interfering with foot placement. Most critically, the insecure central fuel tank mounting must be verified – any movement or rattling could indicate compromised structural integrity or a potential leak, which would be a safety hazard requiring immediate repair or reinforcement. Given the motorcycle’s age and the very low mileage, a prospective buyer should also conduct a thorough age‑related inspection irrespective of the MOT notes. Tyres should be assessed for sidewall cracking, dry rot or hardening of the rubber, as these defects are not mileage dependent. The 12 V battery is likely to be well beyond its service life and should be load‑tested or replaced. All fluid reservoirs – engine oil, gearbox oil, brake fluid and coolant (if fitted) – should be drained and refilled with fresh, correct‑specification fluids, as seals can dry out and fluids can absorb moisture over decades. Finally, a visual check for corrosion on the frame, exhaust, and mounting points, as well as a review of any service book stamps or receipts, will help confirm whether the bike has been kept in a dry, protected environment or has suffered from prolonged exposure to the elements. Addressing these points will give a clearer picture of the GS850’s true roadworthiness and the likely cost of bringing it up to a reliable standard.