What is the best way to increase the gas mileage of a Toyota Corolla?

I recently purchased a used Toyota Corolla and am looking for ways to improve the gas mileage. I've heard about techniques like hypermiling and using fuel additives, but I'm not sure which ones actually work. Any advice?

Hypermiling techniques, such as maintaining a steady speed and avoiding sudden braking, can definitely help increase gas mileage. Additionally, using a fuel additive that cleans the fuel system can also improve efficiency.

Another way to improve gas mileage is to regularly maintain your Corolla, including changing the air filter and spark plugs. This ensures that your engine is running efficiently.

I personally have found that using a higher quality gasoline, such as a top tier brand, can also make a noticeable difference in gas mileage.