I can't recall any major issues with the car at all, the IS300s are our more reliable cars. We barely see them have issues other than normal maint and the occasional a/f ratio sensor. Thats just about it though. The only thing that frustrates me with the IS is it shares basically the same type of suspension setup as the GS and SC430, the camber adjusters in the rear like to seize up. That may not be a problem out west though.