1. When you fill up with fuel, make sure you fill your tank until
it is full and zeroise your car's tripometer.
2. The next time you fill up with fuel, take a note of how many
miles your tripometer reads and how many litres of fuel you filled up with.
3. Enter the number of miles here:
4. Enter how many litres of fuel you filled up with here:
5. Press to find out
what the economy of your vehicle is.