An automatic adjuster for automobile driver equipment, such as a seat and mirrors, which sets the equipment at target positions for specific drivers in accordance with preset data. The automatic adjuster includes a plurality of keys having a different number of holes therein representing information indicative of individual drivers and carried by drivers for automobile access, a key sensor mounted in a key cylinder of the automobile for reading information on the keys when used for access to the automobile; a door sensor mounted in a door of the automobile for sensing the opening and closing of the door of the automobile; a computer connected with the key sensor and the door sensor for providing control outputs in response to outputs of the key sensor and the door sensor, the control outputs being responsive to the output of the door sensor indicative of the opening and closing of the door, and to the output of the key sensor indicative of the information read by the door sensor, and an actuator connected with the computer for adjusting the driver equipment based on the control outputs from the computer in such a manner that a moving speed of the driver equipment is switched in accordance with the state of use of the driver equipment.