The maximum speed of a 150cc scooter is usually between 50 to 60 miles per hour. The exact top speed varies based on the type of scooter and the weight of the rider.
For gas mileage, 150cc scooters typically get around 70 miles per gallon. The three most popular engine sizes for scooters are 50cc, 150cc and 250cc. A 50cc scooter can sometimes get 100 miles per gallon, but its maximum speed is between 35 to 40 miles per hour. On average, 250cc scooters get 60 miles per gallon or less, but they can often go faster than 75 miles per hour.
Scooters are popular around the world, particularly in Europe. Although not as popular in the United States, scooters have become more popular there since 2000, with sales more than doubling. This popularity in the United States is partially caused by increasing gas prices.