Replace air filters. A clogged air filter causes your engine to work harder and your vehicle to become less fuel efficient. Replacing a dirty air filter can increase your mileage by 10% or 15 cents/gallon.

Don't skimp on maintenance. Be serious about auto care. Your car's performance depends on it. Always follow the manufacturer-recommended maintenance. Your car's designed to run a certain way. If you neglect it, it won't be as efficient.

Avoid idling. Idling get 0 mpg. Turn the engine off if you've been sitting more than a minute.

Use cruise control on long trips. This helps maintain a steady speed and helps avoid unnecessary accleration.