Fill up your tank full. | |
Reset the travel odometer clock | |
Travel until you've almost conumsed a full tank. | |
Fill it up full again. | |
Record the number of Litres/gallons entered. | |
Record the kilometres/miles travelled (from the reset odometer). |
Please note that the accuracy of your results depends greatly on you following these steps. The accuracy is not 100% anyway, but is within a 10 to 15% error margin. This is due to filling up at the pumps, as it's hard to fill right up exactly and put in the exact amount you just used.
Please note: In Australia we talk in metric, however do refer to mpg referencing to English gallons not US. There is a large difference in the two. My program displays both though! :)