Fuelly calculates MPG on *wrong* tank of fuel...

[bfranker]

I'm a long time user and used aCar originally. Back when I first started using aCar in 2011 it also calculated the MPG incorrectly. I wrote the app author and he actually fixed it! It stayed fixed for a while but at some point after Fuelly took over, it went back to being incorrectly calculated.

For example, when I fill up and input that I added say 18.7 gallons, it shows me the MPG immediately for the tank I just filled up. That's not right... I didn't get 18.7 mpg on the gas I just added because I JUST added it and haven't even driven the car yet. The mpg should be calculated on the PREVIOUS tank when I fill up and the record for my brand new right now fill up for MPG should remain blank until I fill up again.

This is important if, for example, you're using 87 octane one time and then 93 octane the next and want to see how it affects your gas mileage. But, because Fuelly is calculating your MPG instantly on the tank you just filled up, it doesn't work and isn't accurate.

PLEASE can somebody fix this. I like the app very much but this is very aggravating. lol I've emailed support a few times over a long period and they just say "wait for the next update" and then when the next update comes it's still not right. Thanks!

Note: See attached image. When I filled up with 17.60 gallons on Nov 9th it *immediately* put 17.0mpg in there. When I fill up, it should calculate the mpg for the tank I filled up on Sep 23rd because the calculation goes with that tank where I added 17.77 gallons to the tank. My Nov 9th data for mpg should remain BLANK until I fill up again.