How To Offset Higher Gas Consumption

One way to deal with increased gas prices is to drive less. Another is to improve your driving habits; easy on the gas pedal. But old habits are hard to break.
Another conservation measure is to be sure your car is using no more fuel than it was designed to use by keeping track of your gas mileage.
You may not notice a drop in fuel economy month by month but it could add up to a substantial figure.
If the engine needs a tune-up it could be wasting 15% (or more) of its fuel, due to misfiring spark plugs, inefficient fuel system and malfunctioning emission controls.
If tires are underinflated, not an uncommon condition, rolling resistance of the tires increases by 5%.
If wheels are just 1/4" out of alignment, another factor that affects rolling resistance, chalk up another 2%. Note: this condition, as well as underinflation, accelerates tire wear, thereby adding to the cost of neglect.
A cooling system thermostat stuck in the open position, causing the engine to run too cool, can reduce engine efficiency by another 7%. Tthis hypothesis is intended to emphasize preventive maintenance in terms of energy conservation, it also bears on safety and reduced exhaust emissions. A heavy foot when the light turns green also guzzles gas.

Courtesy: Internet