Line 3 has a total of 38 stations and a length of 20 kilometers and it runs from north to south.

[1] Construction of Line 3 started on March 5, 2010 and it was inaugurated on February 8, 2011 by Marcelo Ebrard, Head of Government of the Federal District from 2006 to 2012.

[2][3] In 2019, the Government of Mexico City announced 7 new stations to the south, ending near Hospital Xoco.

The branch was originally a temporary auxiliary line created to reduce the impact of the Mexico City Metro PCCI fire had on Mexico City Metro Line 3 in January 2021, then it was left permanently.

Until 4 August 2023, it detoured at Avenida Mosqueta (Eje 1 Norte) and it serviced Buenavista and Manuel González stations.