Guys i have 2016 a8 stingray with 2,200 miles and day 2 of ownership i srarted getting a strange warble sound at around 1500 rpm when lightly accelerating. Power through the 1500 point and you do not hear it. Lot of us a8 stingray owners have this problem. I have a post on the corvette forum with over a 100 responses. My dealer said it was the exhaust so they replaced it without a fix. Now the say GM ENG says to replace the rear end. I am no eng. But i knew it wasn't the exhaust and i don't think it is the rear end either. I don't think i am going to let them replace the rear end without some assurance it will fix my problem. Do you guys have an opinion on this issue.