There also seems to be ongoing variation at the regional level with the quality of service. Most New Mexico owners are stuck using the Denver service center, which can be good or bad, you never know. They can go beyond the call of duty, like other Tesla service centers I've dealt with, or they can drop the ball. They tend to triage problems more than other service centers (maybe because they're so busy and have to serve the entire Rocky Mtn area from Canadian border to Mexican border)... for example I have had a persistent incredibly annoying LOUD vacuum brake pump sound in my 2013 S85 and they refuse to fix it stating it's normal, even though it continues to get worse, and even though I've heard other owners having no trouble convincing other Tesla service centers that the buzzing problem warrants immediate fixing. Inconsistency across service centers is a source of frustration.
Here it is mid December and I have yet to hear from Denver regarding a big part ordered, the whole heating system of the car, that they told me needed replacement, back the first week of October. (Seems the "fix" when I had no heat from Nov 2015 thru Feb 2016 was not a fix at all, and the problem and symptoms have returned.) I have yet to hear from them.
As I've suggested umpteen times on TMC, Tesla lacks and needs a decent ticketing system that would hold the company accountable to promises and deadlines and communicating with customers. It's such a no-brainer, and it is desperately needed before Model 3 rolls out and we have hundreds of thousands of customers wondering WTFIGO with Tesla service inconsistencies.
In theory, a year from now we may finally own our second Tesla, a Model 3 on order. At that point, assuming the State of New Mexico still bans Tesla from opening stores or service centers, so that we're still stuck with Denver, it could get tempting to just move to California just to be done with Denver.