If someone could please help me a bit that would be great, I recently purchased a new A4 2.0T, love the car and but I have noticed a strange humming almost howling noise if you will when I am rolling to a stop with no brakes or clutch pushed in, it usually happens at about 2-5 mph and is clearly audible and quite loud. I have yet to bring it to the dealership since I am waiting for new license plates and the car only has 180 miles on it so I am not even sure if it is "broken in" just yet.
Another thing is that it does not feel like the turbo is really working as it should, the car is just marginally quick and not nearly what the reviews say about it or what I remember other Audi's felt like when I drove them, is this the case with this car and is this noise something that may be affecting my performance? Please if someone has this issue or has heard of such a thing I would really appreciate hearing about it and what can be done.

 

ha OP was 2 years ago but for anyone else who reads it, the howling noise is a caliper stuck. there is a TSB 2016681/6