This thread is misleading on the sound.
The one owner that got his V6 bought back by Toyota- his engine sounded like someone was hitting it with a hammer at idle! It was LOUD!
I have no problems with engine noise, it is whisper quiet inside. You can do a search on yotatech.com because there has been tons written about it by that one owner, MISH, and his buy-back. I have not known of any other V6's with that problem.