While driving today, I had active Waze on my Verizon Iphone and my Navdy plugged into the OBD port.
The cars speedo says 52, Navdy and Waze say 49. I pulled out my old garmin, did it again and the Garmin also said 49 while the speedo said 52.
I know generally there is a +/-3% margin of error. But this is more than 3% it is over 6%. When I did the same things at 60, the speedo was saying 64, which is also 6%.
Logic says if the speedo has a 6% error so does the odometer which means it is reading 6% too high and my MPG is 6% worse as well.
Anyone else observe this?
The cars speedo says 52, Navdy and Waze say 49. I pulled out my old garmin, did it again and the Garmin also said 49 while the speedo said 52.
I know generally there is a +/-3% margin of error. But this is more than 3% it is over 6%. When I did the same things at 60, the speedo was saying 64, which is also 6%.
Logic says if the speedo has a 6% error so does the odometer which means it is reading 6% too high and my MPG is 6% worse as well.
Anyone else observe this?