Drive & Save

Speed kills MPG. Every car's gas mileage decreases once it gets past its optimal speed. Drive & Save comes as a completely FREE and very easy to use tool to let drivers know how much they could save per trip and per month if they reduced their speed at any moment for the current traveled distance.
IMPORTANT - although it will function in cities, Drive & Save is a lot more accurate for highway driving!

Features:
-Metric (most of the world) and Imperial (US + a few other countries) units support
-Real time Speedometer
-Speed limit notifier
-Real time Liters per 100 km or MPG calculator
-Consumption or MPG limit notifier
-Real time consumed fuel calculator
-Real time cost calculator
-Real time reduced cost per reduced speed calculator
-Real time delay in time in minutes per reduced speed calculator
-No Internet connection required (only GPS must be turned ON)