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

This item's description does not specify what vehicles it will and will not work with,it will not work with many vehicles . I happen to have 4 vehicles and it will only work with two of them. It does work fine with the ones that it will work with.

My husband and I purchased this scanguage because we were not getting the gas mileage we had been expecting with our new car. Being able to see real-time reporting of the MPG, Throttle, Engine Load, etc has enabled us to improve our gas mileage by TEN miles a gallon. Then you add in all of the things we used to calculate manually like $ cost per trip, per day, gallons left in the tank, average mgp for trip, day, previous day and even the whole tank. This thing is SUPER easy to configure and will pay for itself in just a few months.

As others have said it's a very good product. If your vehicle has lots of gauges on the instrument panel such as my silverado, there is some redundency. But, I have taken my MPG from 20.5 to 24.9 based on watching my throttle position and my MPG. But thats considering that I am using methods to maximize gas mileage such as tons of coasting and shifting into neutral. If I simply did regular driving while being cognizant of the information the scanGauge provides I would probably experience a 10% fuel savings.

The velcro method for attaching to the dash is mediocre but works.

The ScanGauge-II does everything it claims to do. It is very handy for watching my fuel economy, among other things. I do not regret buying this product at all.

Heavily overpriced, honestly, the electronics in this gadget can't be more than $20, if more commonly used. Every car should come with this anyways!

But I will say it has changed my driving style, i can watch the MPG updated every second, and over the last 3 or 4 fillups I have saved at least 10% without any serious effort. Manual is pretty clear. Cable is long enough for people in the backseat to play with it.