how to calculate miles per gallon?

Question

how to calculate miles per gallon in my car

Answer 1

Find out how many miles you have driven since your tank was last full. Divide the number of gallons you put in the car once the pump stops into the number of miles driven.

For example:

You drive 400 miles before you fill up.
You put 10 gallons of gas.

Your mileage is 40 miles per gallon

Answer 2

First you fill up the tank. do not pack it. just fill until it stops on its on. Write down the mileage on the car. drive till the car is 1/4 tank or so and refill. stop the refill again when the pump shuts off. try and use the same station and pump if you can. the car needs to be the same level. Make note of how many gallons it took to fill . write down your present mileage. subtract your first number. that will be the miles driven. divide this by the gallons and you have your average. ex. 300 miles driven 15 gallons to fill equals 20 miles per gallon. Do this several times as many things can cause this figure to change

Answer 3

It's better to fill your tank, reset the odometer to zero, drive until you are just about empty then refill. Divide the mileage on the odometer by the gallons it took to refill and that will give you a better estimate as to the average mpg of your vehicle.
After to or three of the estimates you should be able to see the variations in mpg as a result of driving habits and city or highway mileage.
If you get 300 miles out of 20 gallons then you get 15 mpg.

Answer 4

Write down the mileage on the odometer *Begin* ( or reset the trip odometer) fill the tank full.....Drive at least till 1/2 tank.
Refill gas tank till full. note how many gallons it took.

Check trip odometer or write down new mileage.

End mileage minus begin mileage = total miles driven
divide total milage driven by refill gallons = MPG

Example 275 miles divided by 15 gallons = 18.3 miles per gallon

Answer 5

Go to the gas station, write down your miles, and fill up your tank till it's full. When you need to get gas again, go to the gas station, write down your miles again, and fill up your tank again. Write down the number of gallons you put in. Your average mpg will be (mileage2-mileage1)/gallons. Sometimes I write the mileage down on the receipt, which already shows the number of gallons I put in. This way I can calculate it later. Always fill the tank till the pump stops. This method assumes that you always fill the tank to the same level.

Answer 6

Fill your tank completely up and reset the little odometer. (The one that has the little push button). Drive at least a hundred miles and then fill up. Divide the total gallons of gas you put in your tank by 100. This will give you a very good estimate. This will flux due to your driving habits and conditions.

Answer 7

You realise that when you fill up, the fuel goes in as litres. Before you can work out gallons you need to know how many litres are in a gallon. I used to work in a petrol station and am surprised at many people do not know this.
4.54 litres to a gallon.

Example

60lt divide 4.54 = 13.2gall
657miles divide 13.2 = 49.8mpg

Should be easy now.

Answer 8

no no no no no...get ten gallons of gas...also get 1 gallon in a can...reset ur odometer...drive until the car is empty...take the 1 gallon, dump it on ur head, light a match and realize how stupid this question was

Answer 9

Reset the button on the steering wheel that calculates it for you. Comes standard on my vehicle. It must have been designed for blondes.