Good day, On Friday the 18.10.2024 I picked up my beautiful new Audi A7. Unfortunately we noticed a few things on the vehicle the next day and you hear a light whistle or frequency, when you start the engine and with the gas plays the air conditioning I have already switched off. The noise is still there. Then I still noticed in the engine room based on the photo that there is white stuff on this cable and in the area you hear funny sounds l ochtes cracken knarzen direction catalyst or is that normal . Vllt you have a hunch have already contacted the car dealership but vllt you have some infos for me the car has just 74,000 km down. Lg Gramos Shala