Alstom Metropolis set

The Alstom Metropolis sets are the current class of EMU that operate on the Sydney Metro network, and is the first fully automated passenger train stock in Australia as well as the first single-deck set to operate in Sydney since the withdrawal of single deck trains on the suburban rail network in the 1990s. Currently consisting of 176 total carriages, forming 22 6-car sets, they entered service in May 2019 with the opening of the North West line. 138 more total carriages, forming 23 more sets, will be rolled out in 2024 for the City & Southwest extension, which will expand the fleet to 270 carriages (45 sets).