Can you use regular unleaded gas in a turbo engine?

Yes, regular unleaded gas can be used in a turbo engine, but it may not be the most efficient or effective option. Turbo engines are designed to perform best with higher-octane fuel, which helps to prevent knocking and damage to the engine. While regular unleaded gas has an octane rating of 87, turbo engines typically require fuel with an octane rating of 91 or higher. Using regular unleaded gas in a turbo engine may result in reduced performance and efficiency, as well as increased wear and tear on the engine. It is always best to consult the owner's manual of the specific vehicle to determine the recommended fuel type.