Fuel comes in different grades based on octane level at gas stations. Only some performance engines require Premium fuel for the best power output, fuel efficiency, and engine function. Are you ...

702 out of 729 stations tested by the Department of Consumer and Worker Protection reportedly flunked at least one inspection ...

Octane fights knock; it doesn’t add power to cars designed for regular. Follow the fuel-door label and pick regular pumps—the detergent is the real upgrade Premium Gas Isn’t Better. It’s Octane vs.

Discover the few remaining luxury cars that run on regular-octane gasoline, helping owners save hundreds of dollars a year on ...