Heres how you figure gas mileage fill the car up till the pump turns off. Then reset your trip odometer drive the car atleast 200 miles then fill the car back up till the pump turns off. Then divide the miles driven on the trip odometer by the gallons of gas it took to refill the tank. That will tell you overall gas mileage not using how much it cost to fill the tank the price of gas is up and down. Also you cant use a gas gauge working ir not to figure it out ethier.
Thursday, April 12th, 2012 AT 6:00 PM