I say frequently instead of always because I cannot always reproduce it. Although I occasionally hear some softer clicks periodically when driving which I assume is weight shifting of this or that, this loud single click is, well, quite a bit louder.
Sometimes I think it happens more when I have it in B-Eco mode, but then I have heard it in D-Eco. The frustrating thing is although I often can make it happen with an abrupt slow-down and then an abrupt acceleration, if I try to make it happen again right away (slow-down and speedup) it often will not do it. Seems elusive.
It almost sounds like an electric switch/solenoid. Is this a Leaf thing?