I honestly don't know, tried looking it up in the user manual and all I know is the navigation system is optional on the Uconnect 4C with 8.4–inch display system. No mention of what kind of system they use.
Garmin isn't bad. If you stick to Google Maps it won't be a problem for you, cause you can always use your phone for navigation. Personally, I love to use Waze app for navi, but I'm also curious if I had a navigation installed in my car, will I still be using my phone or will I switch to Garmin?I see that Uconnect still promotes Garmin openly on their website main page which has me thinking that might be it. I'm disappointed because to be honest, they aren't that great, Google maps has been my go-to. Got so used to using Google Maps on my phone for navigation that I don't use anything else.