If you get 320 out of a tank and the tank is 18 gallons what mileage are you getting?

Answer 1

You are getting approximately 17.78 miles per gallon. However, to more accurately check the miles per gallon, you should fill your tank as full as you can get it, reset your trip odometer if available on your vehicle - or write down your current odometer reading when you fill up. Then drive your vehicle to as close to empty as you dare. Then fill your tank as full as you can get it again. This time, check the gas pump for how many gallons you actually put into your car - this should print out on your receipt from the gas station, but write down the gallons if it does not. While you're still at the pump, check your trip odometer if you have one - or subtract the odometer reading you previously wrote down from the current odometer reading, to get your miles driven during the tank of gas you just used. Then divide the number of miles driven by the number of gallons you put in your car to come up with your miles per gallon. Say for example, you actually drove 327 miles during that tank, and the pump at the gas station says you actually put in 17.36 gallons (we rarely drive our vehicles until we completely run out of gas and use up the full 18 gallon capacity), so you would divide 327 by 17.36 to come up with approximately 18.34 miles per gallon. Good luck!