Audi A6 C7 sounds like a tractor..?

[Audi3.0btdi]

Hello! I recently purchased Audi A6 C7, 3.0BTDI and on low rpm it sounds like a tractor. ( like a normal 3.0tdi but no turbines ) When i got to 2k rpm it start sounds like a 3.0Btdi. Is this normal?

Thank you!

Edited June 17 by Audi3.0btdi