I am not sure if its just me as I have recently just purchased this car but it seems like the speed I am going inside the car is not matching the speed outside. I have tried to drive beside someone that I know to see but not sure if that's an effective way to tell. If it is then it seems that my car is off by 10MPH. I know this is a lot and I am not sure what to do about this or if there is a part that needs replaced. I know this is not a lot of information but I am hoping that someone can help.

Thanks.

I apologize for posting this in the wrong Section. Can this be moved please. No cel but it is showing P0507.