There are 643 MultiLevel Coach[4] cars in service as of 2015 on NJ Transit, Montreal's Exo, and Maryland's MARC.

Compared to the Bi-Level Coach, the MultiLevel has a smaller loading gauge and was specifically designed to fit through the North River Tunnels under the Hudson River[5] Eight MultiLevel cars were previously designated for the now-discontinued Atlantic City Express Service.

[9] After exercising further contract options, the last order of which was placed in August 2008, a total of 329 first-generation cars were eventually purchased by NJ Transit.

[12] In September 2010, NJ Transit ordered 100 additional coaches, designated MultiLevel II, with options for 79 more.

[10] In October 2011, MARC Train ordered 54 cars—15 cab cars and 39 trailing cars—from the NJ Transit options.

In December 2018, NJ Transit ordered 113 additional coaches, designated MultiLevel III; the order included 55 unpowered cars and 58 powered multiple units with AC electric propulsion systems, which when coupled to other MultiLevel cars will allow the train to be propelled without a separate electric locomotive.

[1] In October 2022, it was announced that NJ Transit will spend approximately US$8 million to replace the glazed polycarbonate windows on the entire fleet.