Most 49cc scooters are designed to run on regular unleaded gasoline with an octane rating of 87 or higher. These scooters typically have small engines with lower compression ratios, which means they do not require high-octane fuel. Using a higher octane fuel, such as premium gasoline with an octane rating of 91 or 93, will not provide any significant benefits and will likely be an unnecessary expense.
It's always a good idea to refer to the owner's manual or manufacturer's recommendations for your specific scooter model to confirm the recommended fuel type and octane rating. Following the manufacturer's guidelines ensures optimal performance and longevity of your scooter's engine.