Did you know that your car often gets 80, 90, or 100 miles per gallon (MPG)? At other times, it gets 2 or 3 MPG, depending on whether you are climbing a hill or coasting with a tailwind. If you drive a Toyota Prius, you see this info on the dashboard, which includes an instantaneous reading of the car’s gas mileage. But otherwise, you have no idea what your gas mileage is from minute to minute.
Enter the ScanGuage, a gadget that plugs into your dashboard and tells you your current gas mileage! (It also allows you to read the diagnosis codes when your “check engine” light comes on). A week ago my ScanGauge arrived in the mail ($159). Since then, I have been coasting, pulsing, and experimenting with how lightly I can use the accelerator to get from Point A to Point B. We’ll see if it pays for itself, but for now it is a good, if geeky video game. Of course, you have to watch the road, not just the gauge.