I still have the same squeak I've mentioned before in this thread. At 18,000 miles, the dealer said he couldn't figure out what it was, and didn't want to "take apart the whole car" and not find the problem. At this point, it is incredibly obvious that the squeak is coming from the driver seat. If the passenger seat was used as often as the driver's, I am sure, it would squeak, too. When I bring my car in next time, I will have the dealer fully check it out and fix it. It's very disconcerting in such an expensive car, not to mention embarrassing when there is a passenger and you want them to see how good a car the Infiniti is.
I this is my only complaint with the car that comes to mind.