Partial Fuel-up Calculations Improvements

[ryogajyc]

Presently Fuelly does not calculate partial fuel-up(s) and the next full fuel-up. This discards fuel-up MPG which can be calculate by aggregating partial fuel-up(s) with the next full fuel-up.

The Fuelly FAQ states:
"How do I account for partial fuel-ups?
If you can't completely fill up to the top when you're at the pump and you want to track the fuel-up in Fuelly, check the box next to This is a partial fuel-up. This will let Fuelly know that you have a partial tank. Once marked, Fuelly won't calculate MPG for that fuel-up or the next. However, your partial fills will contribute to your overall average MPG."

It is possible to calculate MPG which includes the partial fuel-up. Simply add the partial fuel-up(s) to the next full fuel-up. This works out b/c the the number of gallons used in the partial fuel-up(s) plus the next full fuel-up is the number of gallons used to travel the miles for the partial fuel-up(s) plus the next full fuel-up. It may be useful to denote these (for example, with an asterisk) to indicate that partial fuel-ups were included. This provides better and more instantaneous MPG rather than discarding the partial fuel-up(s) and next full fuel-up.