Bought a 2013 TT RS from Audi Morton Grove back in august of 2017 and have been hearing an engine rattle over the last couple week. Seems to be getting slightly worse. Short video is attached but you should be able to get the gist. Im covered under a 6 yr/60000 mile platinum audi protection warranty. Just trying to see if any one has any leads or ideas on what may be going on. Just had service done two weeks ago and they didnt mention anything not that I really expected them to because I hadn't really noticed it yet due to music and not paying attention etc. I scanned the forums for engine rattles but didnt find anything that matched exactly to my liking.. just a couple similars. Only has 29000 miles on it currently. Any help would be appreciated. Thanks for looking.

-Worried TT RS owner

forgot to mention.. happens at idle (as seen in the vid) but seems to get a bit worse when accelerating.