How do you know how big your gas tank is and what your car gets for miles to the gallon?

Answer 1

This information can be found in your owner's manual. Don't have one, get one. Dealer or salvage yard is a source. Google search for MPG. To determine your fuel economy: 1) Fill your gas tank all the way. 2) Reset your trip odometer or if you don't have a trip odometer write down your milage. 3) If you want to know your miles per gallon for all around driving just go ahead and drive like you normally would. If you want to know your milage for city or highway this is a little more difficult because you will need to do some constant driving in either just the city or just the highway. I would say about two to three hours worth of either just city or just highway driving. 4) After driving for the two or three hours mentioned above or went your tank is getting close to empty try to return to the same gas station and pump you used to initially fill your tank. 5) Write down the total number of miles that you have driven off your trip odometer or find the sheet of paper that you wrote your milage on from the privious fill up. Subtract the privious milage from the new milage. If you get a negative number it just means you did the subtraction the wrong way. Just get rid of the negative sign and you are back in business. 6) Fill your tank and try to fill it to the same point as you did priviously. This is why using the same pump is important. (This is usually the hard part as you can't really "see" how much gas is in your tank. Just try your best. 7) Look on the pump after you have completed your fill up. There should be a meter that tells you how many gallons was sold to you. Write this down. This should be the total number of gallons you used in your experiment. 8) Now divide the number that you got off your trip odometer or the number you got from the subtraction (if you don't have a trip odometer) and divide it by the number you wrote down off the pump for the total number of gallons sold. This number is your average miles per gallon. If you got a very small decimal number it just means that you did the division in the reverse order or you have a "land yacht". Just reverse the order in which you did the division or try and sell that Hummer, Escalade, Pathfinder Armada, Cayenne, Land Cruiser, Navigator or Aviator and get something that is less likely to feed a terrorist at the pump. There is an options label on your vehicle it could be on the drivers door, the glove box or in the trunk. It has a series of letters and numbers these are the options your vehicle was built with. The dealer could look at them and tell you what you have. Or and easier way is your VIN most dealers have a way, by going off your VIN number they can see exactly what options you have including tank size.