Most are pretty good in my experience, with the exception of Tesla. Tesla’s auto-wipers are comically bad. They NEVER work well because they try to use a tiny camera mounted to the top of the windshield to determine when to trigger them. The camera is probably unable to actually focus on the windshield itself, especially since it is also used for the driver assistance features and has to be focused at road-distance, so my guess is they’re using some kind of algorithm to try and detect distortion caused by rain drops on the windshield for an image captured with focus significantly further away than the windshield surface itself. And that challenge has so far remained unsolved. Tesla just pretend to have working auto-wipers.