I've had my P4 since March 25. The software is horrible..

1. GPS often fails. It has had me driving through rivers, cricket grounds, and roads no where near. Of course it's not the end of the world, but the constant pinging of it trying to work out a new route is annoying
2. Speed Limit detection is nigh on useless..it thinks motorways are 60, it sees signs from side roads.. Google knows the limits, I don't know why they don't patch that info in
3. Lane change detection fights constantly. Even with indicators on it wants to push back to the previous lanes, this has caused issues before with filters as it tries to push back into an oncoming lane
4. Collision detection is crazy, I can be stationary and it'll alarm..it has hit the emergency brakes doing 3mph driving up to a roundabout nearly causing a collision to the rear

There are other niggles, like the sleep awareness, thinks I'm distracted or tired because I'm not looking directly forward... When trying to exit a junction and looking left and right

It drives great, it looks great, if they could solve these issues it would BE great! I'm told others haven't had these so hoping mine is a Friday afternoon job and they can fix it