Total Fuel (now with a live tile) supports: Litres, Gallons, Imperial Gallons, Kilometers and Miles. Efficiency: L/100Km, MPG, MPG Imperial and Km/L.
It allows you to track your vehicle’s fuel consumption in a simple yet powerful way.
Say you have a car that has an Odometer in miles, you enter your fuel in litres and you want the efficiency in L/100Km. That is not a problem for Total Fuel.
Do you like stats? So do we! We have lots of them for you and we plan to keep adding more.
If you have any issues or suggestions talk to us on Twitter @totalfuelapp.
1.0.14.0
-Better error handling for SkyDrive backup and restore failures.

1.0.13.0
-Bug fixes.

1.0.12.0
-Fixed efficiency calculation error for MPG Imperial.
-Fixed issue with back navigation when using multiple vehicles.

1.0.11.0
-Fixed issue with live tile loosing it's layout and showing black.
-Published Sharing feature again.
-Performance improvements.

1.0.10.0
-Added a share menu item that allows sending your stats chart to a friend. This is a WP8 only feature.
-Improved selection between vehicles. Tapping was only working when hitting the name of vehicle, now it works for the entire width of the menu.
-Bug fixes.

1.0.9.0
-Added Backup to Skydrive.
-Fixed crashes in WP8 devices migrating from version 1.0.5.0.

1.0.8.0
Added support for multiple vehicles.
Added about page.

1.0.7.0
Added a Live Tile. Just go to the main page and press the push pin to activate it.
Changed the application icon.
Added support for Imperial Gallons.
Added support to the local currency set in the phone.
Bug fixes.

1.0.6.0
Added Windows Phone 7 support.

1.0.5.0
Added many new stats to main page.

1.0.4.0
Chart now starts showing data after 2 fill-ups.
Added average information to chart.
Bug fixes.

1.0.3.0
Added fuel type selection in the fill-up entry form.
Fix bug when calculating efficiency in gallons.