The tram-train from Chemnitz to Stollberg (now line C11) was the original pilot route (Stage 0) of the Chemnitz Model [de] and is operated with electric Variobahn trams.

[1] These were intended to enter service in 2015 but delays in the approval of the vehicles meant they did not begin operation until 2016.

Stage 1 of the tram-train network began operation in October 2016, with the Citylink vehicles running new routes C13 (Chemnitz–Burgstädt), C14 (Chemnitz–Mittweida) and C15 (Chemnitz–Hainichen).

At the end of January 2022 tram-train services were extended over the railway network from Technopark.

In addtition to the tram-train services City-Bahn Chemnitz also operates services with Regio-Shuttle railcars on lines RB 37 between Glauchau and Gößnitz and line RB 92 between Stollberg, Sankt Egidien and Glauchau.