Multistage transmission

A multistage transmission in planetary design is proposed, comprising a basic transmission (8) and a group transmission (9) downstream of the basic transmission (8), wherein the basic transmission (8) comprises three planetary gear set (P1, P2, P3), at least six rotatable shafts (1, 2, 3, 4, 5, 6) and at least five shift elements (A, B, D, E, F), the selected engagement of which results in different transmission ratios between the input drive and the output drive, wherein the group transmission (9) has a minus planetary gear set (P4), the sun gear of which is connected to the output shaft (2) of the basic transmission (8), the ring gear of which can be coupled to the housing (G) via a first shift element (K1), and the carrier of which is connected to the output shaft (7) of the multistage transmission, which can be releasably connected to the ring gear via a second shift element (K2), and wherein the basic transmission (8) and the group transmission (9) are disposed in a common housing (G).