How UK e-bike law shapes what you are buying
In the UK, a legal electric bike is an EAPC, which stands for Electrically Assisted Pedal Cycle. It must have a maximum power output of 250 watts, assistance must cut off at 15.5 miles per hour, and the motor must only help when you are pedalling. Any bike that breaks those rules is classed as a motor vehicle and needs insurance, registration and a licence.
Some bikes sold online, particularly on auction sites and imported from outside the UK, have motors that exceed 250 watts or a throttle that works without pedalling. These are not legal to ride on public roads in the UK. Every electric bike listed on Cyclesite must be a compliant EAPC. If a listing mentions power in excess of 250 watts, a throttle without pedalling, or a speed derestriction, it will not be approved.
Twist-and-go throttles are allowed only in a narrow set of circumstances. If the bike was first sold before January 2016, it is permitted. Newer bikes may only have a walk-assist mode that works up to about four miles per hour. If you see a newer listing claiming a hand throttle works at full power, the bike is likely non-compliant.
Typical prices for used e-bikes on Cyclesite
Under a thousand pounds you are in older hybrid e-bike territory, typically with a rear-hub motor and a small battery. These bikes are fine for short flat commutes. Range will be real-world twenty to thirty miles depending on the condition of the battery, which is the component that ages fastest. Always ask for the battery age and how many full charge cycles it has done.
