Chiming in with my experience, strength and hope for my new-dead S18
Day 1: rode to unlock.
Day 2: rolled unit on a grassy knoll, say 100 feet of unit driving itself and hit a cement drain box. Damage Report: cosmetic skeletal damage to exterior shell. Days after, tire is flat, flat, flat.
Ordered replacement parts. Watched the KingSong Disassembly yt vid twice at full speed.
When the parts arrived, I disassembled the exterior shell and got to the hall sensor, (this playing the same Disassembly Video at half-speed where appropriate)
I decided not to replace