Maintenance Regular maintenance checks keep your car running efficiently. Replacing a dirty engine air filter can improve fuel economy up to 20%.

Minimize AC Air conditioning drops fuel efficiency about 5%. Use it only on the highway. Roll down the windows for city driving at lower speeds.

Travel Light An extra 100 pounds can reduce fuel economy up to 1%, especially on smaller vehicles.

Speed Limits The higher the speed, the more fuel your car consumes. Lowering your speed by 5 to 10 mph can improve your fuel economy up to 14%.

Fast Pass An electronic transponder on toll roads saves fuel by minimizing tollbooth slowdowns and stops.

Check Tires The rolling resistance of underinflated tires reduces fuel economy. They can also overheat and blow out.

Cruise Control Maintaining a steady speed saves gas. But be careful using cruise control on slippery roads; it reduces vehicle control.

Drive Smoothly Avoid rapid acceleration and hard braking, which use up to 30% more fuel on the highway and up to 40% in the city.

Fuel Economy If you notice your car needs a refill sooner than expected, it may indicate a need for car service.

Rush Hour If your employer supports "flex time" work hours, use this option to commute and run errands during off-peak traffic periods.