12 Simple Steps to Increase your Gas Mileage

1. Drive the speed limit. Experts estimate that you lose 20 cents for every 5 mph you go over the highway speed limit. 
2. Use your vehicle's cruise control for highway driving. The cruise control keeps the accelerator even and prevents sudden surges from stepping on the gas.
• Cruise control won't work in favor of your gas mileage if you live in a mountainous area, as the accelerator will be constantly surging going up frequent steep hills.
3.  Shut the car off if you'll be idling for longer than one minute.
4. Drive moderately and don't rev the engine. Anticipate having to stop and slow down way ahead of traffic.  
5. Change your oil regularly and rotate or replace your tires when needed. A dirty air filter or worn-out spark plugs can also seriously drain your gas mileage and should be fixed or replaced.
• Use the motor oil recommended in your vehicle owner's manual. Motor oil additives can also make a difference. Look for an oil in your car's recommended grade that advertises energy conservation or uses the API performance logo.
6. Check your vehicle owner's manual to see what octane of fuel is recommended for your vehicle; for most cars, regular octane is ideal.
7. Reduce engine speed by using your vehicle's overdrive gears. Not only will this easily increase your gas mileage, it will also reduce the wear and tear on your engine.  
8. Take luggage and racks off the exterior of your car when you're not using them. Anything extra on the outside of your vehicle affects wind resistance. 
9. Remove unnecessary junk from your trunk, as extra pounds will weigh a car down. It's estimated that for every 250 pounds hauled, you lose 1 mile per gallon.
10. Travel when you know traffic will be lighter, if possible. Combine trips to run several errands at once in certain areas of town.  
11. Try not to use your four-wheel drive function if possible. The drive components increase fuel consumption.
12. Keep your tires inflated at optimum levels. Not only is this good for the wear of your car and safety, you may be able to get a modest increase in gas mileage.