Automatic Multistory car parking systemhelps to minimize the car parking area. In the modern world, where parking-space has become a very big problem, it has become very important to avoid the wastage of space in modern big companies and apartmentsetc. In places where more than 100 cars need to be parked,this system proves to be useful in reducing wastage of space. This Automatic Car Parking System enables the parking of vehicles, floor after floor and thus reducing the space used. Here any number of cars can be parked according to the requirement. These makes the systems modernizedand even a space-saving one. This idea is developed using 8051 Microcontroller.