The lifespan of a 150cc scooter can vary depending on several factors, including the specific model, maintenance practices, riding conditions, and the care taken by the owner. However, in general, 150cc scooters can last anywhere from 10,000 to 30,000 miles or more with proper care and regular maintenance. Some well-maintained scooters have been known to reach even higher mileage figures. It's important to note that regular servicing, timely oil changes, and proper maintenance can significantly extend the lifespan of the scooter.