How to Find Gas Mileage on a Vehicle

Fuel economy is an important part of owning a vehicle. The better the fuel mileage for a vehicle, the lower the cost of ownership. If your vehicle is rendering lower fuel mileage that you wish or expected, there are certain maintenance tasks you can perform, such as making sure that there is enough air in the tires and that the oil is changed. Finding the gas mileage on your vehicle is a simple process that takes a bit of simple math.

Instructions

1

Find the size of your gas tank. This information is in the user manual for your vehicle. For this example, let's say your gas tank is 10 gallons.

2

Fill your gas tank full the next time you are at the gas station. Note the exact number of miles on the odometer. For this example, let's say it is exactly 50,000 miles.

3

Drive your vehicle as you normally would until your vehicle is almost out of gas.

4

Fill up your tank again with gasoline. Note the amount of gasoline it took to fill up the tank. For this example, let the amount be nine gallons. At the gas station, note the number of miles on the odometer. For this example, let's say the odometer now reads 50,200 miles.

5

Divide the number of miles your vehicle traveled by the amount of gasoline your vehicle used. In this example, divide 200 (50,200 minus 50,000) by nine (numbers of gallons used) for a result of 22.2 miles per gallon.

6

Repeat the process several times to get a more accurate gas mileage estimation.