Among many features, the MP 89 is the first class of rolling stock to include the automatic opening and closing of doors. Instead of a passenger having to pull a lever or push a button to open the door in order to enter or exit the train, all of the doors on the platform side open and close automatically. This is due to the fact that the lines using this material are predominantly underground. This feature was carried on by the MF 2000 and MP 05 rolling stock.