What is the top speed of a moped?

Moped vs.

What you should know Mopeds top out at 40 mph (less with increased rider weight) and may achieve triple-digit gas mileage.

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How fast is a 150cc moped?

A 150cc scooter usually tops out within 55 mph up to 60 mph. However, the bike can gain this speed in a normal condition of tune. But, if your weight is 90 lbs. or close, your customary best speed could be about 60 mph or else ‘somewhat’ more with great upkeep practices.