The best place to find the gas mileage on a vehicle is to go to a the manufacturers website and then find your vehicle. It will show you all the specs on that vehicle.
When the tank is nearly empty put gas in it again and fill it up. Right down the mileage before you drive away from the station and then right down the mileage when you fill it up the next time and divide the mileage by the gallons.
You may have to figure it out on your own. You need run the tank to almost empty then fill it up. After you have filled it write down the mileage and then the next time you fill it divide the mileage by the gallons and you will know your fuel consumption per mile.
You may have to figure it out on your own. You need run the tank to almost empty then fill it up. After you have filled it write down the mileage and then the next time you fill it divide the mileage by the gallons and you will know your fuel consumption per mile.