W
witherinlily
Guest
well if you know bout how many mpg you get then fill up the tank.
If not then fill up your tank and a gas can. run the car til you run out of gas then right down how many miles you went and use the gas can of gas and put that in and go fill up again. add how much gas you had in the can to how many gallons you got at the gas station and divide that into the miles you went. This will tell you what your avg mpg is and if it sounds right and your needle was on empty then its right
If not then fill up your tank and a gas can. run the car til you run out of gas then right down how many miles you went and use the gas can of gas and put that in and go fill up again. add how much gas you had in the can to how many gallons you got at the gas station and divide that into the miles you went. This will tell you what your avg mpg is and if it sounds right and your needle was on empty then its right