I just finished a 2,000mi trip last week and the Nav system is horrendous.
- bad routes. I learned I had to stop the car and verify each route before driving.
- no ability to use waypoints to route the way I wanted to go (e.g., avoid certain LA freeways). I figured out a work around, but why should I have to?
- poor energy forecasting. I'd leave the SC and within 5 miles my charge buffer at the next destination would drop by 5%. No this was not due to headwinds or speed.
- voice guidance was almost always too late. The voice instructions would inevitably say "in .2mi, turn...", when the instrument panel map was showing 500' to the turn!
- No nav map when no cell coverage as happened frequently in Southern California and Arizona. The instrument panel nav map was still there, but they provide no context. Why can I download maps to my $500 phone, but not my $100K car?
The constantly annoying need to press, wait for the screen to reformat and reveal the icon bar, then select the desired icon. The v8 UI change was a very poor tradeoff for another 1/2" strip of map.
Overall the CID apps are the worst implemented feature of the car. The car drives beautifully, but the promise of the huge display connected to the internet, connected to my phone and 500GB of music on an SSD is simply not realized. These apps feel like they came out of a hack-a-thon, not a professional design/development effort.