While I love driving my Lexus, I have had some major concerns with design problems and one significant safety issue with my rotors. Twice it was necessary to machine my rotors because of warpage from overheating and which caused significant and uncontrollable shaking of my steering wheel. Also, if only a rear window or sunroof window is opened, an intense vacuum is created in the interior which hurts my ears. I must open my driver's window to eliminate this vacuum -- very poor design! I have also had problems with my rear window spoiler weatherstripping, several scratches on the exterior finish, intermittent unworkable power rear door, and transmission surges and jerks from shifting.
Style and luxury.
Correct rotor and brake problems as this is safety issue. Improve exterior paint, replace cheap plastic exterior trim, correct interior vacuum problem, improve seat belt positioning as it creeps to my neck quickly, improve interior leather to eliminate rubbing noise of seat against seat.