[1] 85 cars were built by Metrowagonmash in Mytishchi near Moscow between 1972 and 1976.

[2] In 1992, car 1031 was sold to Siemens to be used as an experimental vehicle for 1500 V DC voltage, 560 kW power output and current collection via overhead wires.

In 1994, car 1020 was withdrawn and planned to be rebuilt by ČKD in cooperation with Škoda.

[2] Four of the 85 cars have been preserved, of which three (1083, 1084, 1085) are kept in Kačerov (C) depot for special occasions, and one (1009) is preserved in Prague transport museum MHD in Střešovice.

[2][3] Media related to Ečs in Prague at Wikimedia Commons This Czech Republic-related article is a stub.