Just my anecdotal experience: I'm sure our lower vin # is in the running for the worst assembled as well. Failed again at a supercharger today, and now it's on a flatbed back to service. However the service center does a fantastic job; no single part has failed twice as they have all been updated revisions. The later vin X's I have experience with are night and day difference with initial quality (panel alignment, squeeks and rattles, et cetera). I'm only without a tesla for a few hours so far as they are out of loaners in my area, and I already miss it.