Yeah, I have. Bought an X in mid 2018 and it has been in the shop some five or more times. That's bad enough, but they won't fix most things. Falcon wing doors won't work correctly. They often don't open fully. Some of it has been explained to me (there's a box the car constructs based on what it sees as the door starts to open, won't move outside that box) but the door just plain malfunctions intermittently. I even took photos of the door sensor detecting a presence when nothing was there, no one downloaded the car data. Then there was the time someone was trapped in the mid seat, couldn't get either rear door to open from inside or outside door controls. Finally found the console would still work. Service center never downloaded the data and won't fix anything.
Same story with passenger side mirror. Same story with several other problems with the car. If they can't "see" it fail, they won't try to fix it. Often they come up with justifications for why it malfunctions, like someone must have bumped my mirror which kept it from opening.
The most recent problem was the car not charging at a Supercharger. I plug it in, watch it start charging and go to a restaurant for food. I get a notice the charging has stopped. I try to restart from the phone and it's cranky and keeps quitting. Food comes and I call 800 number. On hold all through the meal and car starts charging on it's own. Finish eating and head out to the car as someone picks up. Charging almost done he runs diags and says the 12 volt battery sensor is flaky. Charging done and we reset the car and he schedules a mobile repair. A week later the mobile repair guys gets in touch and wants more info. I give him the info and tell him the voice commands have quit working. He cancels the mobile repair and schedules a service center visit because they want to upgrade the ECU to 3.0. So now I'm waiting two more weeks and he doesn't download the data once again. With no data to back it up it is unlikely they will fix anything.
Before this model X I had a 20 year old pickup truck that gave me less trouble. I still had problems getting the damn thing fixed, but if things got bad I could repair it myself. I'm told Tesla won't sell a lot of their parts to users, so I'm stuck with the service centers... if you can find one.
