Had it 2 weeks now. Previous 2010 Prius V owner. Love the FFE ride and overall efficiency. Have some rattles/buzzing in door panels to assess. One in particular I fixed. It was a "twanging" sound that emanated from the rear passenger trunk area. I determined it to be coming from the SONY amp bolted to the rear trunk inner fender well. I pulled the right trunk fender well liner off, and tapped on the amp. The noise was replicated. I silenced it by placing a foam block between the amp and fender well. Quite frankly, the physics of having a large, relatively heavy object such as an amplifier bolted to a thin sheet metal bracket that isn't supported on both ends is silly. If others have experienced this sound from the rear passenger-side trunk area, and have a SONY amp back there; the fix could be what I described. Next up: Finding the source of a rattle inside the pillar behind the driver's head that holds the seat belt retractor unit. I think there is an air bag in there as well. Cheers, Mark