I'll start by saying I do generally like the bikes. They are fun to ride; batteries are good; reasonably comfortable -- though they could have taken some cues from any of the plethora of pre-existing platforms out there.
My issue is with their customer support, or rather complete lack thereof. I've found old posts I guess dating back to when the company was smaller when they actually helped their customers address problems. Now, I feel like they are practically useless. Nine months ago (6 months after I bought the bike), my BMS decided not to wake up for lack of a better description. My nearest dealer at the time was over 200 miles away, which would mean hauling a trailer over 400 miles round trip to drop it off, waiting an unknown length of time for the repair, following by another 400-mile round trip with trailer to pick it up. Knowing that, Zero's only response was that they could only help me if I brought the bike to an authorized dealer. They even tried to feed me a line of crap about "current regulations" requiring it. They may write that into the fine print of their warranty agreement, but that is certainly not part of any regulation.
By luck, after about 3 days, the BMS came back to life on its own. It wasn't for anything I did. I just kept turning the key every once in a while, and it happened to come back to life. Exporting the MBB logs confirmed the BMS was basically completely offline the whole time. And for the record, those "reset" buttons behind the rubber plug on the front of the monolith are useless.
Skip ahead to this morning, and I key the bike on to see the dash displaying the dreaded 0% charge followed by main contactor's not latching, and in a few seconds after that, the check engine light. In case anyone was wondering, my bike rarely strays beyond about 35% to 70% charge, ever. Anyway, I got to work by other means and started poking around the bike when I got home in the afternoon. As before, the BMS is simply just off. The MBB console reports "No BMS connected," the same as last time.
The good news this time, or so I though, there is a local dealership now, so I gave them a call. They are booked solid at least 4 weeks out, but I couldn't even get on the schedule yet because the only person they have who deals with the Zeros is out until next Tuesday. And that would just be to get the appointment. There's no telling how long before they would put any work into the bike. Best case, they are able to execute a fix through software, but more likely, they'll be waiting on a replacement BMS based on the posts from literally everyone else I've found on the web who had the same problem. And even if a BMS does come in a timely fashion of which I have practically no confidence, how long do you think it would be for the dealership to disassemble the battery to replace it? I communicate this to Zero, and their response, "We will need your motorcycle brought to your preferred Zero Motorcycles dealer for us to further support them with addressing your concerns."
Anyway, I'll be damned if I ever do business with this company again. Their service model is deplorable. I'm typing this on a Dell laptop I bought somewhere around 3-4 years ago. In that time, I've called in a claims warranty items, nothing major but the component replacements did require disassembly of the laptop. In each case, Dell simply mailed me the replacement parts after some very simple diagnostics over the phone. I don't mean to suggest that every problem can be solved so simply, but not to make any attempt at all is really pathetic.