When I was at the SC a few months ago for a tire rotation (~ 4k miles) I asked about the "thunk" I was hearing between regen and acceleration and was told it's normal, but I could swear I didn't remember it doing that when I first got it. So I did some research, asked other MS owners if they had a thunk, and the unanimous opinion is that it shouldn't exist, it should be completely silent between regen and accel.
The noise got a little annoying in stop-and-go traffic, and you could feel the thunk in addition to hearing it, so it became a challenge letting off the accelerator just right so that it didn't thunk. I called the SC about it a couple weeks ago (~ 9k miles) so they picked it up yesterday and let me know today they identified something in the drive unit and are in the process of replacing it. They are also installing updated motor mounts, does anybody have any info on what's changed with these? Should have it back tomorrow, we'll see if that does the trick!