C1-class Melbourne tram.
The E-class trams are three-section, four-bogie articulated trams that were first introduced to the Melbourne tram network in 2013. They are being built by Bombardier's Dandenong factory, with the propulsion systems and bogies coming from Bombardier factories in Germany.
The E-class is part of the Tram Procurement Program, a Public Transport Victoria project aimed at increasing capacity and reliability of the tram network through the introduction of new trams, creation of new depot space, and upgrades to existing infrastructure. In September 2010, 50 were ordered with an option to purchase a further 100. In May 2015, a further 20 were ordered, followed by another 10 in May 2017 which will take the total to 80.