[8] Siemens Rail Services was contracted to provide maintenance of the trains for a period of 15 years (subject to refranchising) at Newport Workshops.

With the refranchising of the network to Metro Trains Melbourne in 2009, this maintenance arrangement was retained for an initial three-year period.

[13] In an effort to replicate the brake fault, testing of affected trains was carried out on the Werribee line between Newport and Laverton, with soapy water sprayed onto the rails to increase the amount of wheel slip experienced.

In December 2008, train operator Connex commenced proceedings in the Supreme Court to claim damages from Siemens.

In March 2009, it was reported that three Siemens Nexas trains had been impounded due to new braking incidents in the week prior.

[14] In June 2011, installation of sanding equipment was completed across the entire fleet, and speed restrictions on all Siemens Nexas trains were lifted.

These include: The Siemens Nexas trains are fitted with a Passenger information system produced by the German firm Annax.

A cleaning program occurred at the same time, which included fitting new seat pads and covers, re-painting walls and applying anti-graffiti film to the windows.

[23] In early 2024, the Siemens Nexas fleet began to receive a refurbished interior, with the old blue seat fabric replaced with the current PTV design.

In a separate project, they had new dynamic information displays added, similar to the Stage 3 Comeng, showing the next few stops and the line colour.

Later deliveries entering service in bare metal on the sides, and white front fairings with a green and yellow striped bar.