One way to measure how much gas your car is consuming is to fill the tank up and document the mileage, then drive it until at least half of the tank has been used. Next, document the mileage when you go to fill up your gas tank and also document how many gallons of gas it takes to fill it back up. If you divide the number of miles you have driven by the number of gallons of gas you put in the car, this will give you the “miles per gallon” that your car is using. Give us a call and we can help you determine if it is high, low, or right on track.