I saw couple of discussions, but the OP information is always a bit vague hence the discussion goes around suggestion to why the issue would be present. So, I am starting my own
My car, which is brand new, make Feb 2024, 2.0 TSI 280hp, always idles at 1000rpm. This is in D. When I switch to P or N, it does lower them to the normal 800rpm. I do use Start/Stop, but on the rare occasions when it does not engage (or I disengage it with light tap on the brake), it always stays at 1000rpm. When I stop SS, it does it as well.
It is not related to the engine being cold/warm, does not change if the AC is on or off, if the music is loud or not. Does not change if in Normal Mode, or Comfort, or even ECO. It does not change whether Auto-Hold is on or off. Or if I pressed the brake pedal light, medium or really hard.
is this the normal behavior or it is something related to the car being brand new and the break-in period? It is not VERY annoying, since I don't mind Start/Stop and 0rpm is better than 800rpm, but I still find it very annoying how the "silent petrol engine" vibrates more than my old diesel engine, because it is always a little revved up.