@Wilco-Jansen, if you navigate without Carplay (you can test that by removing your phone from the carplay device, not by just enabling the phone screen), so natively in the app, does it do the same thing? If all goes well by navigating on the phone natively, there must be a discrepancy in the GPS data the Carplay device gives out. You can test that by disabling location permissions for the carplay app on your phone. I don't know hoever how to do that on an iOS device. The MRA app falls back to the phone's GPS signal if it can't get one from the carplay device.