19: Increase Your Gas Mileage
Want to know a simple and easy hack that will get you increased fuel mileage? Don’t drive with the A/C blowing. The less strain your engine has to do in the heat, the better your gas mileage will be. Another way to increase the mileage is to ensure the air filter in the engine is nice and clean. The more air the engine can pull in, the better mileage it will get (via Family Handyman).