Partial fillup wrong MPG

[Elliott_B]

I have noticed that Fuelly does not correctly calculate MPG after partial fillups. Here is an example screenshot. I have a full fillup, followed by two partial fillups, followed by a full fillup. The last fillup ignores the partial fillups in the MPG calculation. Instead, it should do (170,148 - 169,700) / (9.220 + 1.467 + 1.751) = 36.0 MPG.

By the way, the reason for this situation is a friend put gas in the car and saved the receipt for me, but did not write down the odometer, so I just entered the previous value.