Rattle under front center speaker.
I am disappointed to say that after 4 hours of servicing at Mazda HQ service center, they couldn't fix the problem. I have identified the problem and it is a padding issue between the center of the dash with the chassis towards the windshield. Fixing this problem tends to require complete removal of the dashboard which is not acceptable on a brand new less than 1000 KM vehicle which I waited 6 months to get in OCTOBER.
More than that, today I discovered that a squeaking sound is coming from the rear of the car when going over bumps. This is very likely a bushing problem. Can be fixed with some lubes and teflon tape but this is starting to piss me off.