Thanks for the suggestions. We've thought about these quite a bit, and we're ok with the sorting options we have now.
We don't want to have any sort of sorting by best mileage because that would turn Fuelly into a leaderboard game that you could "win". It would give people an incentive to cheat. Here's
more info.
We agree that cars with few fuel-ups have irregular averages. Right now our cutoff is three fuel-ups. We've found that three is a good balance between getting a stable average and getting people in the directory as quickly as possible. There will be cases where three fuel-ups isn't enough, but those tend to be rare.
We also haven't found a good reason to sort based on time. If a vehicle got 30 MPG two years ago it's just as valid as a vehicle getting 30 MPG today. If you're just looking for stats on a particular model, those are good numbers to have. If you're looking for "engaged" Fuelly users, that's a different problem. We currently sort the lists by most recent fuel-up—giving preference to those vehicles with pictures. So you can pretty quickly find people who are currently fuelling at the top of the list.
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