History of the Barcelona metro network

The 400 series of the Barcelona metro, presented in 1958 and painted from the beginning in blue and cream, was created to cope with the increase in passengers with the opening of line II. Between 1958 and 1968, 80 cars (60 engines and 20 trailers) were built, distributed in three subgroups, with usual compositions of three cars (2 engines and 1 trailer), although they could circulate with up to five. With the arrival of the Class 4000, in 1987, they were progressively withdrawn until 1989, although some units remained as a reserve until 1992. The M-425 car was kept in the Sagrera workshops until 2018, when it was dismantled for preservation. For the celebration of the centenary of the metro, this car has been restored to leave it in the state it had before its withdrawal.