I can tell you from personal experience:
1. VWAG has separate software stacks for VW-derived models and Audi/Porsche models (one of the things Caridad was supposed to fix)
The VW stack can't unlock remotely! This is a feature the other stack has. Why a car made in the last 5 years doesn't have this feature is beyond me.
2. Various bugs. Red warning: TEXT_NOT_FOUND, Your trunk is always open (cannot be remotely closed anyway!)
3. Remote start/Climate start can only be programmed one day in advance, only 2 timers.
Does it not make sense to make something like weekday starts (especially on an EV where you can't die of CO poisoning?)
4. Not updating the car status in a timely manner. Your car is at 35% charge... 2 days ago, today? App has no idea.
5. This is not a software issue, but premium car that doesn't have a front/360 camera. This is being added to economy cars at this point. How do you expect to sell against Chinese cars which are basically loaded with Cameras and about one software update away from putting filters on ugly people to make them look good? Even Tesla has remote monitoring.
I have never driven or been in a Chinese EV, but this is a pretty low bar as I can show.