Currently, SWU has ten Combino NGT 6 UL trams and twelve Avenio M NGT 6 UL trams, both types manufactured by Siemens Mobility. All trams use a 1000 mm gauge.
Combino trams
In 2003, the previous fleet of GT4 trams was replaced with eight Combino NGT 6 UL vehicles. Two more trams were delivered in 2008 to service the extended Line 1.
Riechers, Daniel (1997). 100 Jahre Straßenbahn Ulm/Neu-Ulm [100 Years of the Ulm/Neu-Ulm Tramway] (in German). Ulm.{{cite book}}: CS1 maint: location missing publisher (link)
Schwandl, Robert (2012). Schwandl's Tram Atlas Deutschland (in German and English) (3rd ed.). Berlin: Robert Schwandl Verlag. p. 138. ISBN9783936573336.