I don't know. I'm on my fourth Lexus. I had an ES 300, a GS 300, still have an SC 430 and recently bought a GS 460. When I traded in the first two they had over ninety thousand miles on them and a lot of that was in NY and NYC and if you come from there you know what those roads are like as far as potholes. My SC 430 has over sixty thousand on it and none of them had any unusual rattles or squeaks. Neither does my new GS 460 and I hear things as those of you who have read my brake issues on the GS 460 (which Lexus has resolved) know.