They have twelve 140-kilowatt (190 hp) traction motors, allowing speeds of 70 kilometres per hour (43 mph).

[11] In 1996, the work to establish a financing package for new investments in public transport in Akershus and Oslo started.

Oslo Package 2 allowed municipal and state grants to be supplemented by increased fare and toll road revenue to finance, among other things, new trains for the metro.

The initial order by Oslo Sporveier was for 33 units (or 99 cars), and was approved by the board on 28 June 2003.

Combined with other investments in the network, the new trains will allow faster travel times on the metro.

[15][16][17] In 2005, the city council voted to replace all existing T1000 and T1300 stock with the MX3000, increasing the quantity by another 30 units.

With the delivery of the new trains, Oslo Sporveier received criticism that they had been disloyal to the old red color of the metro, and that they did not follow up on their former design concept from the 1960s through the 80s.

[19] During the first 30 days, two errors occurred: one in the closing mechanism of the doors, and one with a switch in the cab that was not water tight.

The worst incident occurred when a train slid 1.3 kilometres (0.81 mi) from Blindern down to Majorstuen.

[21] Following the 2006 decision to convert the Kolsås Line to metro standard, Akershus County Council announced that they would order five units.

This resulted in protests from the employees, who performed a partial strike by refusing to work overtime.

Trains would start using the balloon loop located at Stortinget, and the western lines would continue to have a 15-minute headway.

[26] The same year, the city council in Oslo decided to upgrade the Holmenkoll Line to metro standard, to allow six-car MX3000 trains to be the main mode of transport to Holmenkollen during the FIS Nordic World Ski Championships 2011.

[30] In November 2010, the Accident Investigation Board Norway criticized the braking system of the trains.

[33] The MX3000 is a three-car electric multiple unit built exclusively for the Oslo Metro by Siemens in Vienna, Austria.

[34] Unlike the red predecessors, the trains are painted white with black and grey detailing.

The height of the floor is 1.12 meters (3 ft 8 in) above the track, allowing step-free access to the platforms.

[10][34][35] Unlike the older T1000 trains, the triple-car configuration allows passengers to walk between the cars.

The frequency and amplitude of the current fed to the engines varies depending on the train's speed.

[35][37] Energy usage is reduced by 30%, estimated to save the operating company NOK 13 million per year, compared to using the old stocks.

[10][35] The latter, which the MX3000 was the first to use on the metro, gives reduced noise, better comfort and makes it possible to adjust the height with changed passenger weight.

They are informed to the engineer via signals in the driver's cab; in addition, the system will automatically reduce the speed, should the limit be exceeded.