2017 Volkswagen Tiguan - Odd sound

Hi there I drive a VW tiguan 2017 2.0 tdi and every time in the morning when I start the car it sounds like its working on 3 cylinders as soon as the car warms up and you switch it off and on again it works fine.It doesn’t register any faults or anything like that.Does someone now anything about it or did anybody had the same problem before

Maybe a bad glow plug? You might post this on a VW TDI forum, too.

I would drive to the dealer if the vehicule is still under warranty.