If the HUD worked and stopped working afterwards it can be due to a loose connection or a bad control unit somewhere unless someone tried to mod something (even PPF; I have seen rear lights on H6 not work after a PPF job due to connectors not properly connected).
If there no HUD options in the head unit, then it is very likely that the connection to the HUD is loose or not connected at all.
If bought directly from a dealership go to them. If bought from a third party or an individual ask them if it ever worked. It is likely that if not bought from a dealership, then it is possible that someone tried a mod and blew a fuse (unlikely since only the HUD is not working) or screwed up something else in the process. Worst case, car was in a accident and the out of dealership repair caused this
There was a post on Haval FB (Pakistan) page about the radar not working. The person in the video said the car is new and after a wash the radar malfunctioned. Turned out that the car was in a accident that likely damaged the radar.