After opening the rear doors, what is the small black hole on the car body used for?
Official answer
The Xiaomi SU7 does indeed have a circular hole on the rear door sill, which corresponds to a hat-shaped cylindrical rod on the door edge. This is a safety design to cope with side collisions, preventing the door from intruding too much into the passenger compartment during a side impact, thereby reducing the risk of injury to passengers. Many current models adopt similar designs, although the shapes may vary.