I'm new to this forum and I need some help. I am in the process of buying a 2005 A4 w about 94k miles on it that just had one owner. I've never owned an Audi before and I'm not very familiar with their turbos. So when I test drove it I notice a Whinning should only when I accelerated over 2 k rpm. sounds very much like a video on YouTube titled "dentist drill" could this be that turbo is going out ? This car seems very well taken care of and I really want to buy it but I Just wonder if they all supposed to sound that way? Any input would greatly be appreciated it. Thanks .

 

It's a 1.8 T automatic