How to use the gas mileage calculator
- Fill up and reset your trip meter.
- At the next fill-up, note the distance and how much fuel went in.
- Enter both to see your fuel economy.
Getting an accurate number
The “fill-to-full” method is the most reliable: fill the tank completely both times, and the fuel added the second time is what you used. Average a few tanks for a steadier figure.
Examples
28.57 mpg · 8.23 L/100 km
7 L/100 km