Electronic functions
It's far worse than just being non-intuitive.
Keyless entry/ignition. My stepson has an Audi and when he lost his key, he had to spend $600 CD to get a replacement and have it coded. Audi has a proprietary lock on replacement parts. EVERY part has to be coded. He bought a software tool to code an after-market battery and other parts.
Our Nissan will lock itself after a few minutes when it assumes you forgot.
Gone are the days of being a mechanic. Only a "technician" can work on modern cars.