Weeping at the 1.0 VSG TSI

Hello people Have my Arona now for 10 days. Already on the 2nd day I noticed at 50km/h a howling, high Surren. It sounds like this when starting up and becomes with increasing speed always higher. Not dependent on speed. Under load It is not audible but in the plane with cruise control. At higher speed it disappears rather in the driving noises, but I can now still perceive it at 125km/h. Sounds a bit like if an electric motor was still installed… It already bothers me a little bit, especially because I drove another demonstration car 3 days ago and it sounds the same. Workshop thinks it’s normal. Did your cars do that? I tried to record it, but it’s too quiet…