EconoDriver is a car computer which you clip to your keychain. The device is designed to help you drive carefully and conserve fuel, but the trip reports also give useful info on how much you’ve spent on the journey and whether you wasted fuel because of sloppy driving.
You need to install a small wireless dongle into the vehicle’s ‘data port’ which is normally found under the dashboard, and that’s it. Instant readouts. A great way to instantly add some intelligent feedback to your car, and who knows, it could pay for itself quite quickly if you learn some helpful new eco driving habits. $79.95.
EconoDriver helps you drive smarter and more economically by relaying real-time fuel economy to understand how efficiently you are driving. You can even program in the current cost of gas and it will indicate how much money you are spending as you drive and how much you are wasting while idling.