Hello, I have already put this question under a test report, because this topic was also illuminated there. Unfortunately without an answer, so I try it here with my own post. I bought a Hyundai i20 last year (data see profile). I like the car very well, unfortunately I also have a problem. The radio causes a clearly perceptible “spullenfiepen”. I was already there with the dealer, however, this said: “That is normal, would be with every car , I can just turn off the radio / turn on the music”. Noise available as soon as you get in. When the ignition is activated, it is gone as soon as the radio is switched on again. Does any of you have a similar problem? Is there a solution? Thank you! VG