If the motorbike has an engine size of 50cc or less, it's considered a moped while scooters have a bigger range of engines, with the most common being 50cc, 150cc, and 250cc.

If the motorbike has an engine size of 150cc or less, it's considered a moped while scooters have a bigger range of engines, with the most common being 250cc.

If the motorbike has an engine size of 100cc or less, it's considered a moped while scooters have a bigger range of engines, with the most common being 150cc, and 250cc.

If the motorbike has an engine size of 50cc or less, it's considered a moped while scooters have a bigger range of engines, with the most common being 150cc, 250cc and 300cc.