I got my new Model S in December in Ohio so did not have an opportunity to accelerate for a week or so. As soon as I did I noticed a loud grinding. Took it in to the shop (Toledo) with less than 400 miles on the vehicle and they replaced to front shafts. This did not fix the problem and in fact now I have more issues. Took the car back in a week later and escalated the complaint to the regional manager. Upon further review they confirmed that there is an issue but they do not currently have a fix, the engineering team is on it - not happy to say the least. It is now 2 months later - I am stuck with a car that grinds every time I accelerate - even on chill mode. Regional manager (Cleveland) said I am stuck with it until they have a fix, but they have no idea when that will be. I have made no less than 25 calls to the dealership (Blue Ash - Cincinnati), engineering team and everyone else I can think of to try to get the vehicle replaced. No one will return my calls. If I had a way out from this purchase I would happily take it.