To be fair, you just implied you were looking at used AMGs and M cars instead, which are the very definition of planned obsolescence through crushing unreliability, mechanical complexity, and repair costs.
Plenty of scorned souls around here looking to scare people off, but I’ll say a used performance Model S will almost certainly be more reliable and cheaper to maintain long term vs any contemporary AMG or M car. That is not to say “cheap,” but cheaper.
Plenty of people, myself included, have perfectly reliable cars and reasonable to good service experiences. Tesla’s service model will never cup your balls in the same way a German luxury dealer will, but let’s face it - that “special” treatment isn’t free. You pay dearly for it.