My App driving speed is showing 110km/h when traveling at 100km/h
My displayed speed is 10km/h higher than it should be. I have a 2018 Ford Mustang with car play and I connect my iPhone 11 to it via usb. In my other car (Mazda CX5) the app shows the correct speed when connected to Mazda car play When driving the mustang I disconnect my iPhone from the usb and the app shows correct speed. The mustang speedo shows 100km/h. If there a way to fix the incorrect the reading.