These innovative features made the MP 89 the first of its kind on the Metro and allowed the RATP to continue to equip its lines with the modernized stock.

Among many features, the MP 89 is the first class of rolling stock to include the automatic opening and closing of doors.

As the train approaches the platform and begins to slow down, a second station name announcement "Barbès – Rochechouart" is made.

The MP 89 CA does not utilize "mind the gap" announcements at the present time because none of the platforms on Line 14 are curved.

Another new feature of the MP 89 is the interconnecting gangways in between cars, which was previously achieved with the prototype BOA and later the MF 88.

This is described further in the next section, because the type of gangway equipped differs between the CC (SIG-Hübner) and CA (Paulstra) versions.

From 2006 to 2007, an experimental program ran on selected train-sets on an LCD passenger information system (Dilidam).

This was designed mainly due to fears that the curved platforms on Line 1 (such as Bastille), as well as storage of the trains within the tunnels, could cause significant damage to rubber gangways.

The transfer of these trains to Line 4 allowed RATP to retire the MP 59 stock, which were reaching the ends of their useful lives.

The remaining four trains are stored at either the garage behind the Mairie de Montrouge station, or at the Saint Ouen workshop as operational spares.

24 March 2023 marked the last day of the MP89 CA on line 14, which lost its original rolling stock.

New trains of the MP 14 series will replace the current fleet of Line 14, because of the extensions of the Grand Paris Express project.

The RATP changing the 52 trainsets into 5 cars it will be able to carry out the renovation of 2 or 3 trains at a time without degrading the operation of the M6, reserves included.