I've had my car for about the same length of time. It is fun to drive when it's working. The first two years were uneventful, but it was evident that the build quality was subpar and the software substandard. And I'm not referring to the entertainment system here, but rather the software that controls the car itself, which falls short compared to my Volvo XC60. The fly-by-wire system lacks the necessary redundancies and telemetry/logging to fail safely. My experience involved the car's computer malfunctioning while in lane-keeping cruise control (Autopilot, not FSD). The vehicle would abruptly and violently swerve out of the lane, crossing over the white line into adjacent lanes and towards barriers. Tesla initially attributed these issues to wheel alignment or tracking. It took several service appointments and months to convince them otherwise, requiring me to mount a GoPro in my car and dangerously recreate the issue, which randomly occurred after about 45 minutes of cruise control driving. It wasn't until I contacted their PR department and threatened to involve the press that they took the matter seriously.
What a perilously flawed failure mode. Yet, throughout these months, during which the car swerved erratically at least 20 times, no alerts were triggered, nor were errors or crash dumps logged that could be detected by their technicians or the main office in California. It required GoPro footage from inside my car to highlight the issue.
Their service process is Kafkaesque. Phone support is ineffective, and you're relegated to using a text box in the mobile app that only accepts small image attachments. Videos cannot be uploaded directly; they provide an email address, but emails can;'t contain links or they will be blocked and emails with large attachments won't work. Each interaction feels like starting from scratch, as they don't seem to review the history or notes of your issue.
As for the humidity or fog in your headlights, they claim it's within specifications and will dissipate once the car warms up. There's so much more, phantom breaking at highway speeds, exaggerated range estimates, slow headlight dimming, headlights that need constant re-calibration, terrible rain sensors and wiper modes, etc. etc.