Audi a6 c7 missing part

[Iceze]

Hi all
My Audi a6 c7 diesel
Could you pls tell me what this part is in red circle and what its function. This is missing in my car purchased few months back.
thanks in advance

[Bandiz]

nothing?

[Iceze]

Sorry that was an image we found online. Our car is below. It was pointed out when we were trying to sell our car that there was something missing there. Not sure it's some random sort of grated plastic, but it must serve some function. 

 

[Steve Q]

All looks normal to me.