I recently had an issue with a clunking noise when accelerating & slowing. It’s pretty easy to hear unusual noises since the car is so quiet. I had looked at this forum & found a similar issue with previous gen Leafs. I brought it to the dealer & they quickly identified an axle nut that required re-torquing (tightening). The service advisor suggested it was from hard braking, and some other ICE Nissan models have the same problem. Seems like a poor design but I’m happy the noise is gone.