Not only does it use friction brakes but it abuses them, when driving manually I’m able to stop 99% of the time with just regen. If anyone wants to see what FSD feels like using the friction brakes, and you don’t have FSD, go driving around and use your left foot to brake.When I drive manually, I get a pleasant satisfaction and challenge to use regen braking primarily and friction brakes only if absolutely necessary. In fact, when I do use friction brakes, I am annoyed. Aim is to never have to replace the brake pads. FSD uses friction brakes often, very frustrating. It would be nice to see a running safety score for autopilot.