Oslo Sporveier opted for the all-new MX3000 from Siemens as a replacement for the T1000 stock instead of the T2000. Although its design was found to be unsuitable, the T2000 was initially not planned to be replaced by the MX3000, as the line was to remain with overhead wires and none of the new MX3000 trains are equipped with pantographs. However, following Oslo's decision to host the FIS Nordic World Ski Championships 2011, it was decided to upgrade the Holmenkollen Line to full metro standard, allowing longer than two-car trains. A proposal to downgrade the line to light rail standard and make it part of the Oslo Tramway was rejected.