As I write this; I have been using this gauge for basically an entire year. This little unit is totally a life saver for people who are doing towing. I towed over 9000 miles this year and I was able to extract the best performance out of my truck using this little gauge.So a few things to start; the clock is useless and it cannot read vacuum or MAF or boost pressure on all cars. My guess is that it looks for specific names/tags in the OBD2 data and if your vehicle has different tags/names (as mine does) then it doesn't find them.Other than that; the fuel consumption, RPM and speed values are great for hyper-mileing on cruise control. The consumption per 100KM (no way to change this to miles even if the rest of the gauge is changed to American standards/SAE); helped me to get the best mileage. Finding the right balance of engine RPM, consumption and speed was invaluable to me during my long journeys across my state as I was moving.Today I still use the gauge every time I drive my truck to try to save gas as we all know it is quite expensive at the time I am writing this review in mid 2022. The other thing is that this gauge reports the real speed as shown in your car's computer (which often matches the GPS) and not the inflated speed of the speedometer (which is common to help against speeding) in most cars.The gauge has various different backgrounds and gauge options but the one in the picture is the only useful one to me so I have always left it on that choice.The only real downside is that it does drain the battery slowly via the OBD2 port so when I am not driving I have to remember to flip the switch off on the side of the screen (it does turn on and off with the car normally, but there is still a trickle charge drain if the switch is not off).All in all its a great little device that helps to save money!
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