2018 Yamaha MT 125 ABS 0.1L Petrol · SW18 OVZ

The most recent MOT on 13 May 2026 was a pass, but it carried two advisories – a rear brake pedal that is bent yet still functional, and a slightly loose drive chain. Earlier that same week the bike failed the test, the failure being driven by the same pedal and chain issues together with a headlamp aim that was too high and excessive wear on the rear lower suspension arm pin or bush. The fact that the major suspension and lighting faults were rectified in the short interval to the subsequent pass shows that the current owner has been responsive to serious defects, yet the persistence of the bent brake pedal and chain slack indicates that some wear items have not been fully resolved. Overall the maintenance trend is cautiously improving, provided the outstanding advisories are addressed promptly. At eight years old the recorded 4 161 miles works out to roughly 520 miles per year – a very low annual usage for a 125 cc sport‑naked motorcycle. Such limited mileage often points to long periods of storage rather than gentle riding, and it can mask age‑related deterioration that is independent of distance travelled. Low‑use machines can develop battery sulphation, rubber hardening, and corrosion on suspension bushings or brake components simply from time and environmental exposure, while still showing low wear on consumables such as tyres or the drive chain. When you inspect the bike, give particular attention to the rear brake pedal and both front and rear brake levers; check that they move smoothly without excessive play, and verify that the brake pads are not unevenly worn, which could be a symptom of a bent lever or mis‑adjusted linkage. The chain should be measured for correct tension and examined for any signs of elongation, stiff links, or dry, cracked O‑rings – a chain that is even slightly loose will accelerate wear on the sprockets and can lead to noisy operation or sudden slip under load. The rear lower suspension arm and its bushings should be felt for play and inspected for any oil seepage or corrosion, as the previous excessive wear could re‑appear if the bushings have not been replaced. Finally, confirm that the headlamp aim is correctly set and that the lenses are clear, as an over‑aimed lamp is a safety issue that must be corrected before the next test. Given the bike’s age and low mileage, also examine the tyre sidewalls for cracking, dry rot, or hardening, which can occur even on lightly used tyres. Test the 12 V battery with a load tester or have it checked at a reputable garage; a battery that has sat for long periods often needs replacement even if the voltage reads nominal. Inspect all fluid reservoirs – engine oil, brake fluid, and coolant – for colour, level and any signs of contamination; fluids degrade over calendar time and should be replaced on a schedule independent of mileage. Look for any surface rust on the frame, swingarm, and exhaust, and ensure that all mounting bolts are tight and free of corrosion, as prolonged storage can encourage rust that may affect structural integrity. A thorough visual and road‑test inspection covering these points will give you a realistic picture of the motorcycle’s current condition and the maintenance work likely required before it can be relied upon for regular riding.