Sometimes, drivers don't even realize they own a flex-fuel vehicle. If your car has a small label near the yellow gas cap that says E85 or Flex Fuel, then you're in luck. Obviously, these cars look ...

According to AAA, as of July 14, 2025, the average price for a gallon of premium gas, or 91 octane, in California is $4.93. Across the country, that number comes down to $3.98, and drops as low as ...

Premium doesn’t add power in cars built for regular. Follow the label and prefer regular gas for cleaner engines and steadier performance ...

The price difference during a fill-up between regular and premium gas can be eye-opening. As of this writing, the U.S. Energy Information Administration reports that the average price for a gallon of ...