Perhaps a different league, but when I had my Mercedes, the service was wonderful.
I had a string of bad luck with nails in my tires, and each time I called roadside, they were there within a half hour (and only due to traffic).
Annual oil changes, they’d come to me, drop off a loaner, and then swap back and end off day. I had a small intermittent and hard to reproduce issue, and they fixed it without issue. All communication was done via text, and was very responsive if I had questions (with a phone call being an option should I choose)
My current Tesla, the only issue I’ve had was a dead 12v battery. Tesla roadside was a pain to deal with. Had to do it via text, and had to wait nearly two hours just for them to acknowledge me. I like that Tesla has mobile service, but roadside couldn’t dispatch them. So had to be jumped and towed.
Service center communication was mostly radio silence for two days. They did give me Uber credits, which was nice. But since Uber doesn’t really service my area, it took an hour just to find someone to pick me up.
When I picked up my car, it was handled under warranty (which was surprising because the 12v is a wear and tear item, and no one else covers them). Overall, not a bad experience, but could be improved with better communication.
They’re building two new service centers near me, so hopefully that will help with Tesla’s backlog.
I’ve certainly heard of the issues. My guess is that it’s a new technology, so it will take time for people to be as fully trained and for parts warehouses to stock up.
My hope is that they will work things out soon.