One problem related to bumper has been reported for the 2006 Lexus IS250. The most recently reported issues are listed below.
My car was damaged by shipping company (momentum transport) during shipment from TX to va. Damage was done to the front bumper and rear bumper. I contacted the company after receiving the car and was asked to send pics of the damage. I emailed pics of the car before shipping and pics of damage after shipping and have not heard from momentum transport since. I have called and left several messages and sent email and the company continues to ignore me.