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

I'm glad I found this on Amazon. I had been thinking about trading vehicles because my 06 Honda Van did not have gas mileage instrumentation. This thing is so easy to set up. If you can plug in a lamp, once you find the OBD plug, you can install this. It's not glamorous but extremely functional. I added some of the X-guages and could be no more pleased.
Charlie Herring

I got a Yaris in April and was a little dissapointed to only be getting 36 MPG. I figured if I knew what my instantaneous mileage was I could improve it. I got the ScanGuage II in mid-July and its been great. I was able to look at and clear the trouble codes on my other cars and my gas mileage has improved to an average of 39 MPG with a high of over 43 MPG in only a little over a month. At this rate, the ScanGuage will have paid for itself in less than 6 months.

Bought this for my truck to see if I could squeeze out a few more MPG. So far so good. First couple of tanks I probably increased my mileage by 1 to 2 mpg. It allows you to monitor quite a few engine functions and is not too hard to set up and use if you have a technical bent. It connects via a cable to the on board diagnostics port which is standard on all newer cars from 1996 on up. Power comes from the OBD2 port so there is nothing else to hook up. It is LED backlit and can be configured to match the color of your dash lights.

Now that I have had it a few weeks I am starting to get more involved with the trip functions. It allows you to set up the size of your tank and then when you fill up, you can adjust how much it thinks you burned. This allows the unit to apply a fudge factor to try and make it more accurate. Once dialed in, it should be very accurate at telling me how much I'm getting on a tank, how much gas is left and even my cost per mile based on the last price per gallon I paid.

Lastly, it will allow you to read codes stored in the computer and reset them if necessary. For the money, its probably the best diagnostic tool there is.

works well with my Honda Jazz,easy hook up
does everything the maker claims
the reason it gets a 4 star,is the web site should
contain more info on commands and have more programmable
gauges.it is difficult to come by this info on the web
but still think the product is great,for the tech geeks
who wants to know all those useless data that comes from
their ECU HA HA

This is great. It has never been off by more than 1/2 gallon when I fill up. I think the most useful ones were tank MPG and miles to empty. The directions are a little jumbled. As most things you learn how to use it by toying around with it till you find what your looking for.