The Société de transport de Montréal announced that, beginning in 2031, the Green Line will be operated solely with MR‑73 subway cars. The decision means that the line will no longer use the newer rolling stock that has been in service on other routes.
The MR‑73 fleet, which has been part of the STM’s vehicle inventory for several decades, will replace the newer wagons on the Green Line. According to the STM, the older cars will become the exclusive equipment for the line once the transition is complete.
A key statistic cited in the announcement highlights a reliability gap: the MR‑73 cars are reported to be eleven times less reliable than the newer wagons they are set to replace. The figure underscores a measurable difference in performance between the two types of rolling stock.
The shift to an all‑MR‑73 operation on the Green Line is part of the STM’s broader plan for its network. While the agency has not provided additional details on the timing of the rollout beyond the 2031 start date, the announcement confirms that the older fleet will take over the line’s service duties.
The change raises questions about service consistency, given the noted reliability disparity. The STM has indicated that the transition will be completed as scheduled, with the MR‑73 cars handling all passenger traffic on the Green Line from the specified year.
Residents and commuters can expect the Green Line to run with the MR‑73 cars exclusively starting in 2031, marking a notable shift in the composition of the line’s rolling stock as the STM moves forward with its operational plan.