ScanGauge II 3-in-1 Compact Multifunction Vehicle Computer with Customizable Display

It is a great learning tool for increasing your gas mileage. Using the instant readouts you can adapt your driving strategy to get the most mileage. I'm still working on getting 27mpg round trip to work with my Jeep. Best ever without the scangauge (checking tank to tank) is 23mpg (usually about 21mpg). After getting the scanguage my tank to tank results is now running a little over 26mpg. Jeep Cherokee 4.0liter 5-speed EPA rating 15city 19hwy 17combined.
As added bonus is reads diagnostic codes and will reset your Check Engine Light.

I'm a retired Garage/Owner before retirement I sold my business, the sale included all garage equipment, tools which included a Pro Link diagnostic tool.

A few years later I realized I needed to have OBDII scanner after hearing about ScanGauge II, I purchased one. I'm completely satisfied with it and its performance I've been able to used it on two different vehicles, it will do most everything a Pro Link does and you don't have to purchase software for different makes of automibles. 5 Stars and more

I really like this product, it has helped me to watch my quick starts and to stop the "lead" foot. I also have started to use neutral on coasting and downhill to help with my mpg. It has helped me improve my mileage by a couple of miles per gallon just by helping me watch what I am doing.

The ScanGauge was purchased based on favorable review and comments on the Toyota RAV4 web forum.
It does exactly what it says it will do; providing a host of data about the vehicle's operation.
I monitor coolant temperature (degrees F), MPG (updated every few seconds), engine load (% of power output at the current RPM, and engine intake air temperature.
I also monitor fuel left in the tank which is more accurate then the dash fuel gauge.
While the display backlight has many color choices, and can be dimmed at night, the "text" could benefit from more contrast.
Other then this minor complaint, I am very satisfied with the ScanGauge.

Wow what a product!!
I've had this thing for a while now and I'm still discovering more awesome features.
I love the screen that shows you how much its costs just driving sence your last fill up. It's also about how much you're going to spend to fill you tank back up.
I recomend this product TO EVERYONE that gets in my car. It's great to help you keep your foot off of the loud peddle.