The only car I have ever owned with a built in navigation system was my 2013 Nissan Leaf. Nissan stopped offering map updates after 5 years, even to purchase. To me that is the biggest problem with integrated navigation. If the OEM decides to stop supporting it, then you’re stuck with obsolete maps. If I have the choice, I will never purchase a vehicle with built in navigation again unless it has some sort of permanent update path. I actually rather liked the nav in the Leaf.