2001 Yamaha SR125 0.1L Petrol · Y96 RTU

The SR125 is famously economical, typically achieving around 65-75 mpg from its 124cc single-cylinder engine, meaning fuel costs for a low-mileage rider could be as little as £200-£300 per year. Road tax is negligible for a sub-125cc machine, and insurance falls into the very cheapest brackets, often under £100 annually for an experienced rider. Parts are inexpensive and widely available thanks to the model's enduring popularity. With minimal mileage recorded, typical maintenance should be light — think new chain and sprockets, fresh tyres, and a service every 12 months rather than any major mechanical work. Estimated annual running cost is roughly £400-£600 including fuel, insurance, tax, and basic servicing.

The MOT history is largely uneventful, but the two drive chain advisories (in 2022 and again in 2025) indicate this is a wear item to inspect carefully — look for stretched chain, hooked sprocket teeth, and adequate chain slack adjustment. Beyond the MOT items, physically inspect the front fork seals for oil weeping, check the rear shock for leaks or corrosion, and examine the exhaust for rust given the bike's age. The 2023 tyre-related failure is not a mechanical concern but reminds buyers to check that any replacement tyres match the sidewall direction markings. Also worth inspecting are the carburettor condition (kinks or perished fuel lines on a bike this old), spark plug condition, and the electrical system — particularly the indicator switchgear, which is a known weak point on older SR125s.