- Cost of the petrol
- The amount of petrol I pumped into the car
- The odometer reading when I pumped petrol into the car
- Date and time
From a dollars and cents perspective, I converted this figure to become dollar economy by multiplying the amount of fuel by the average cost of the fuel. This was calculated to be about $18.5 per 100km. Obviously, this figure will fluctuate with the price of fuel, and that is a good thing as it clearly shows the true value of your fuel usage.
To put that dollar figure into perspective, if we drove to Ballarat to visit the in-laws, the trip would cost about $20 on fuel alone. Plus the $20 for the trip home.
I am gathering a spreadsheet to help perform this calculation quickly. If you are interested in getting a copy of the spreadsheet, send me an email tehn.yit.chin @ gmail . com or leave a message in the comments. The spreadsheet should be available in the next few days.