The first MF 67 trains entered service on Line 3 in June 1968,[3] and became one of the biggest orders for the Métro, with 1,482 cars constructed.

The need to replace the Sprague-Thomson fleet, as well as increasing costs associated with the later-cancelled plan to introduce rubber-tyred trains on all Métro lines, were the main factors for the size of the order.

It was originally envisioned by the RATP to convert all Metro lines to rubber-tyred pneumatic operation.

However, this plan was later abandoned due to high costs, which in turn, would have prolonged the service of the aging Sprague-Thomson trainsets to 80 years.

These trains are colored yellow and brown, and serve as auxiliary equipment of the RATP (VMI).