I purchased a my GS with 65k on it and documented service history at the dealer all the way back to and including the window sticker. I am now at 89K and the plastic case around the AC evaporator has failing adhesive that leaks water into the car ($3400 repair). The starter takes about 20 min to actually start ( $900 repair) and it will be due for the $1000 90K maintenance at the next oil change. That's $5300 in maintenance before 90K miles. This is not the type of quality I expect from Toyota or Lexus. I don't think I will buy another and I would give some serious thought to repair expenses before I purchased one of their products. The headliner and sunroof sunshade have had rattles also.
Eliminate interior rattles, don't put a seam through the bottom of a container that holds water. It will eventually fail.