The Sm7 is a class of electric multiple unit trains planned to enter service on the VR commuter rail network starting in 2026. The new trains will have 4 carriages per unit and they will be 50% more energy efficient than the older stock. The trains are based on the Stadler FLIRT platform and will be assembled in Poland. They will replace the Sm4 trains on the D, R, T, Z and M routes which will in turn allow the non-accessible Sm2 trains to be retired entirely.