The tender calls for the supply of 74 driving cars and 148 intermediate cars formed into 37 seven-car sets, with an option for eight additional trains.

The tender evaluation was weighted heavily in favour of price, with a maximum score of 50 points, followed by electricity consumption (24 points) maintenance (22 points) and environmental factors (4 points).

The lowest-priced offer came from a consortium of Škoda Transportation and Škoda Vagonka, which submitted a bid of Zlotys 1.608bn gross. The only other bid within budget came from Stadler Poland, which offered a price of Zlotys 1.656bn gross.

The remaining three bids from Alstom Konstal, CAF, and a consortium of Siemens Poland, Siemens Austria and Newag, ranged from Zlotys 1.7bn to Zlotys 2.2bn.

Warsaw Metro currently operates 18 six-car Metropolis trains supplied by Alstom, 35 six-car Inspiro trains supplied by Siemens and Newag, and 22 six-car series 81 trains supplied by Metrowagonmash, Russia.