A transmission comprising four planetary gear sets, eight shafts and six shift elements. The sun gear of gear set (P1) is fixed via brake (04), the carrier of gear set (P1) is fixed via brake (03) and the drive via clutch (13), and shaft (6) via clutch (36). Sixth shaft (6) is connected to the ring gear of gear set (P2) and the sun gear of gear set (P4), the drive is connected to the sun gear of gear set (P2) and is connectable to the carrier of gear set (P3). Seventh shaft (7) is connected to the ring gear of gear set (P1) and the carrier of gear set (P2), and is connectable to the sun gear of gear set (P3). The ring gear of the fourth gear set (P4) is connectable to the housing via brake (05). The output is connected to the ring gear of third gear set (P3) and the carrier of fourth gear set (P4).