To provide an automobile information display unit that is able to surely transmit a driver's intention to the succeeding vehicle.

This information display unit is provided with a rotary displayer 4 with an information displaying part 4d recorded with the prescribed information pertaining to one's gratitude to the succeeding vehicle, and automobile behavior, an opening displaying part 5 supporting and storing this rotary displayer 4 free of turn while being formed in a position being opposed to the information displaying part 4d, a case body 3 being capable of sighting this information displaying part 4d from the outside via this opening displaying part 5, and two lamps 6 being installed in this case body 3 and illuminating the information displaying part 4d in making it link up with the operation of a driver, respectively.