Gas mileage is one of those things I feel like I should give more of my attention than I do. Oh sure, when the day (finally!) comes for me to upgrade my vehicle, miles per gallon will play a starring role in the selection process, but as far as my day-to-day consumption goes I’ve been rather blissfully apathetic. Fuelly may be just the tool to change my ways.

The primary purpose of Fuelly is to help you keep track of your vehicles’ gas mileage. Sure you could do this with a spreadsheet, but Fuelly also lets you update from your mobile device, compare your mileage with others, share tips and participate in discussion fora about getting the most out of every gallon. For those who need a little extra incentive to avoid jackrabbit starts you can even earn a gold star for your “best tank.”

Fuelly is still new; the creators are already responding to requests for features and fixing the little things that need to be fixed. I learned about it from the folks over at Wesabe, a web-based personal finance program I reviewed last year that I still use regularly. The Wesabe folks are already talking about integrating the two and I can’t wait to see what they come up with!