The middle of last year I uncovered the FuelFrog website which let’s you track your fuel mileage.
The MyMileMarker website serves the same function and let’s you track. MyMileMarker lets you collect all the information that’s important in tracking your mileage and travel information. They then provide you with some great reports of the information as well. You can also submit your fill-up information through their mobile site, or via twitter too.

And now a guest post from Hilary Evans from Eco Friendly Driver.
At Eco-Friendly Driver, I write mostly on saving gas usage and emissions, but it really doesn’t matter if you’re working to help the environment or your pocketbook. The internet offers great resources for drivers who want to save.
Waste less gas with Traffic.com. Find your best route with info on road work, and anticipated traffic jams in mind.
Pay less with GasBuddy.com. Do an area search and find the lowest priced pumps in your area (volunteers needed).
Reduce your other car-related expenses with Rideshare.org or Carshare.net. Set up ride swaps or find …read more