I've only tried it a few of times. It is not very good at identifying parking spots, it is very slow so a bad idea in a busy parking lot and I found it too unreliable, so I have no confidence in it. It did ok on one occasion.I wanted to start playing with park assist but I’m always taking over as I’m not very confident in its ability. Anyone regularly using parking assist for parallel or perpendicular parking?
I still haven’t had the courage to try it out yet. Maybe I will give it a shot in a low-traffic area sometime.I've used it successfully about 5 out of 8 or 9 times or so. I did it just a few days ago with a spot of the left side of the car (one way street) so that works the same way as with right-side parking. It cuts the turn in a little closer to the car you start out next to than it has to in my opinion... but it works. It is fairly picky about engaging and will easily cancel if you drive just a little too far past the spot or don't hit reverse or forward when it tells you to.
I'd suggest finding nice low-traffic side streets with a spattering of open spots to practice on a couple of times so you can get the hang of it before trying it under higher-pressure downtown situations.
Adding: There's really no chance of wrecking your car this way as long as you pay attention. The accelerator and brake are completely under your control. If it is going wrong you just stop or take over steering.