I started this thread because I was concerned with the numbers of complaints about the new IS that I seemed to be reading about after a brief absence from the forum. I should have mentioned that while I had my IS250 I had no rattles, mirror vibration (other than when playing music REALLY loudly) or other associated problems and mine was one of the early ones purchased in Dec 2005.
I know there are others out there with IS250 and 220s that are in the same boat who have cars that they are very pleased with. I think those that have had unsatisfactory cars have just been unlucky. I also think that with the output of Lexus increasing significantly that this has had a negative effect both on the quality of the car and to some extent on the dealerships (based purely on what other people are saying).
I was very pleased with both my IS and the dealer, in fact I bought my new SC from them, making the numbers of cars purchased from them now totalling three.
Just out of interest I was driving down the motorway today top down, windows down, music on very loud and doing slightly over the limit ( ) and there was zero vibration from the rear view mirror. This car is a dream!