2020 Mazda CX-3 Engine Noise

[Npcox07]

I have a 2020 cx3 and once the engine is warm I have a repetitive hissing noise where my air intake enters the intake manifold. Is this a normal sound for a Mazda engine? Secondly once I shut off my car, about a second later I get an audible "swoosh" of what sounds like pressure being released. I tried to upload a short video of each. Thanks in advance for any response.

 

[Mazdiod2]

I'm glad mine doesn't do that! It does sound like some kind of vacuum leak.

 

[Npcox07]

The car runs well and I have no dash lights on, I'll take it back to the dealer. I just wanted some insight from another mazda owner.