My Sportline has what I guess is called the Columbus (I used to under stand which radio was which) and has an interesting "feature".   Whilst the navigation system works, the location is sometimes a fair way away from where it should be. By which I mean if I'm driving along, the system might place me somewhere adjacent to where I actually am. It doesn't happen constantly, but it does happen a lot.   In the example here, the car things that I'm off road about 50m away from my