How do I calculate the gas milage of my car?

Answer 1

fill up the tank to the top
note the miles on the odometer (M1)
drive for a while, maybe a week if you can
fill up the tank again, to the top
note how many gallons of gas it took to refill the tank (G)
note the miles on the odometer (M2)

calculate M2 - M1 = D

calculate D / G = MPG

do this several times and take the average of the MPG calculations. (Add up all the MPG numbers and divide by the number of estimates you made to get teh average). That should give you a fairly representative estimate of your personal MPG under actual use conditions.

Don't be surprised if it looks nothing like the number on the sticker.

Answer 2

pretty simple. Fill up the gas tank. Note the mileage. drive until the tank needs refilling. Refill noting how many gallons it took and the mileage. Subtract beginning miles fro ending miles. This is how far you traveled on a tank of gas. Lets say that you went 300 miles. Divide that number by the amount of gas it took to fill up. Lets say 10 gallons. The result in this case is 30 miles per gallon.

Answer 3

Fill the gas tank and then zero the odometer. Drive until you need gas again.

Next time you fill your tank, divide the number of miles you drove by the gallons of gas added.

For example: 300 miles divided by 15 gallons equals 20 miles per gallon.

Answer 4

Fill the tank all the way, note the mileage on the odometer. When you fill the tank next time, note how many gallons it took to fill the tank and again, note the mileage on the odometer. Subtract the old mileage from the new and divide that number by the number of gallons it took to fill the tank. Easy, no?

Answer 5

Fill you tank until the gas automatically shuts off. Drive for a set number of miles, say 200. Go fill your car back up and note how many gallons it takes until the pump shuts off. Divide the # of miles driven, in this case 200, by the # of gallons you just put in.

Example: 200 miles/7.8 gallons = 25.64 MPG.

Answer 6

simple look in the owners manual and find out how many gallons your tank holds...then go fill it all the up...then reset your trip meter or if you don't have one, write down the mileage on your odometer when you filled it up....drive til it's near empty and then refill the tank all the way up...take note of how many gallons it took to fill it back up,divide it by how many miles you have gone and bang that is your miles per gallon...take that number and multiply it by how many gallons the tank holds and bang..that's about how far you can travel on a tank of gas.....

Answer 7

The next time you fill up, reset the TRIP odometer on your car to 0000. Then the next time you fill up after that, divide the miles on the trip odometer by the number of gallons you used.

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Answer 8

You could just look it up online.

Here's one that does gas mileage specifically:
http://www.autohopper.com/fuel_economy_cars/results_gas_mileage.asp

This one's a little bit easier because the search contains the model name. It will give you the general info for the model. The gas mileage will be displayed with some of the other specs.
http://www.autotrader.com/research/model_info/index.jsp?restype=both

Answer 9

supply up by the nearest automobile elements keep and ask them to tug the computing gadget codes out of your automobile computing gadget. i have self belief you may want to have a defective sensor or 2 it really is causing the low mileage. you could also carry out some ordinary freshen up that would want to improve your mileage besides. clean and verify out good the following elements by following the methods defined contained in the hyperlinks following this placed up: Exhaust gas Recirculation Valve Idle Air administration Valve useful Crankcase air flow Valve Throttle body

Answer 10

Take the miles driven since last fillup and divide by the gallons you put in, equals your MPG