Hello,
I am a new owner of a 2016 ATS-V which was a left over from last year. When I purchased the car I noticed a rattling noise likely coming from the turbo and I left the car in the dealership for a week thinking they would fix the problem. The salesman stated he "couldn't hear it" and didn't know of this issue with these cars, even though they claim to be the largest V dealer in the country in Costa Mesa, Ca. When I picked up the car they said "this is a common problem and most of the ATS-V have this turbo rattling." They don't call it a problem yet it is not normal and not all cars have the issue. I am surprised GM is not doing anything about this! How many others are experiencing this issue and what has your experience been with it?