Fuelly - Fuelly allows you to tracks your gas mileage over time, helping you calculate fuel expenses as you drive.
Fuelio - Track your fill-ups, fuel consumption, fuel costs and save money.
FuelLog - The latest Tweets from Simon Morgenthaler (@FuelLogAndroid). FuelLog, the best fuel, cost and maintenance tracking app on Android!
My Car - The application allows you to quickly and easily manage the traffic of your cars.
Everlance - Automatic driver mileage & expense tracking with mobile apps
Mileage - A Mileage tracker for an Android-based phone.