Azienda Trasporti Milanesi (ATM), the city transport company of Milan, has bought 93 Sirios (all one direction cars).
The ATM has 48 seven section Sirios (7100 series) with a length of 35.35 metres (116 ft 0 in); these trams have a capacity of 285 people, of which 71 can sit.
The ATM has also 35 five section Sirietto (literally "little Sirio": 7500 series) with a length of 25.15 metres (82 ft 6 in); these trams have a capacity of 191 people, of which 50 can sit.
The City of Gothenburg therefore withheld a large part of the payment for a delivered tram until fully operational.
[2] In February 2013, 38 out of the total 40 trams delivered in the first series were taken out of service due to extensive corrosion on the chassis.
[8] Athens Tram operates a fleet of 35 bi-directional Sirio vehicles, styled by Pininfarina.