Fuelly has 1 major flaw...

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Fuelly is a great site, really helps me keep track of my fuel costs. But there's one major flaw as far as I can tell. Its the fact that it requires a full tank to calculate the MPG's.

This is not a problem for me, one of my cars has a 4.4 gallon tank, the other has a 7.7 gallon tank. But here in the UK, fuel is over $10 a gallon and I cant think of one person in my town, friends or family, that ever fills thier tank when fueling up. On average people just put $15 to $25 worth in at any given time. As mentioned, the main reason being that fuel is expensive and people simply cant afford to fill thier cars, another reason is that cars here are obviously more economical, even two gallons should last around 120 miles in most modern cars. And then there's the odd person that feels filling thier tank is adding weight, therefore affecting thier MPG's. All valid points, but just goes to show, that fuelly cant or wont be used by many people for these reasons.

Discuss!