By changing your driving habits you can improve fuel economy and there are many tips which you can use to start saving dollars and not pennies. Keep Your Tires Properly Inflated
Keeping the tires at the right pressure not only increase your safety while driving, it also promotes fuel efficiency. You will notice that if your tires are underinflated, you will experience the extra drag on your car and this translates to more fuel usage.

This not only improves your overall vehicle performance, but it will improve your fuel economy as well. Drive smoothly
Aggressive driving can use as much as a third more fuel, so avoid accelerating or braking too hard and keep steering smoothly. The fewer heavy brakings and flooring of the accelerator, the more fuel you save. Lowest gear yields greatest power but translates to an increase in fuel consumption. To improve your fuel economy, drive in the highest gear possible when you are cruising at a steady speed, such as on the highway.

Use Cruise Control
Using cruise control can improve your gas mileage by helping you maintain a steady speed, but only if you are driving on mostly flat roads. Avoid excess idling
When a car is idling, it is using fuel. Turning the engine off during idle periods can help you avoid burning excess fuel. You will save fuel.