Karoq - weird sound when accelerating

Hey guys,

I bought a used Karoq 2.0 150 hp, diesel and 24k km from a skoda dealer and I have noticed that, when I accelerate let's say for 5% out of 100%, everything is fine, but when I go upper (accelerate), like 10% or higher of the full acceleration a whine noise (beeeep) can be heard, and it disappears when I lower the acceleration under 5% or I don't accelerate at all. Does anyone know what could it be? I have an appointment to the dealer next week but I'm afraid they will say that it's normal, but from my point of view it's not normal.   

I have tried to record it but it can't be heard 😞. And it happens only when I accelerate, I moved my ear near the acceleration pedal and it can be heard better, but still fuzzy.

Thanks in advance!