Road noise (bad insulation), air in coolant system, poor fitting weatherstripping rubber, etc. Actually prompted me to research online other possible issues and that led me to premature wear of the lower control arm bushings, driveshaft leak, absorber mounting, and rear absorber leak. I do hope HM has preemptively taken steps towards this. Also hopeful that the email I sent the HM CEO Chujo-San via their CRD reaches her. Already very tired with the whole experience after getting the car on December 2021.