
This GPS Speedometer works perfectly. Tested on my car and the speed never exceeds 1km/h and only sometimes. It takes a second or two for the actual speed to be displayed. For example, if you accelerate to 55 mph and stop, it will be 53 54 55 and then stop after the car stops at 55 mph. Bought this for my old 1997 Toyota Rav 4 which still works - the speedometer decided not to go over 20mph and it works great as a replacement.

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