Dual-clutch transmission for a motor vehicle, comprising gear sets which are switchable via first to seventh shift elements and which form precisely eight wheel planes (RE-1 to RE-8) which are arranged in succession in a sequence of the first to the eighth in the axial direction from the input side to the output side of the dual-clutch transmission and which are respectively assigned to a first sub-transmission and to a second sub-transmission, of which the first sub-transmission has a first input shaft and the second sub-transmission has a second input shaft, and both sub-transmissions (A, B) have a common output shaft which is axially parallel to the input shafts (22, 23), wherein the mutually coaxial input shafts (22, 23) can be alternately activated by a respective power-switchable clutch (K1, K2), and the even forward gears (2, 4, 6, 8, 10, 12) are assigned to the first sub-transmission and the odd forward gears (1, 3, 5, 7, 9, 11) are assigned to the second sub-transmission, which can be shifted during a gear change via the shift elements (SE-A to SE-G), wherein each of the wheel planes has a drive gear which is mounted loosely or non-rotatably on the respective input shaft (22, 23), and an output-side gearwheel which engages therewith and is mounted loosely or non-rotatably on the output shaft, which can be coupled to or uncoupled from the respective input shaft (22, 23) and/or the output shaft by the shift elements (SE-A to SE-G), with the formation of forward gears, wherein the first wheel plane (RE-1) and the second wheel plane (RE-2) are interconnected for co-rotation in the first sub-transmission via an output-side hollow shaft, rotationally mounted coaxially on the output shaft, of the first sub-transmission, and wherein arranged non-rotationally on the output-side hollow shaft of the first sub-transmission is an output-side gearwheel of the first wheel plane (RE-1) and also an output-side gearwheel of the second wheel plane (RE-2), and wherein the second wheel plane (RE-2) and a third wheel plane (RE-3), following in the axial direction, are interconnected for co-rotation by a drive-side hollow shaft, rotationally mounted coaxially on the first input shaft, of the first sub-transmission, wherein arranged non-rotatably on the drive-side hollow shaft is a drive-side gearwheel of the second wheel plane (RE-2) and also a drive-side gearwheel of the third wheel plane (RE-3), characterised in that the first sub-transmission has a fourth wheel plane (RE-4) which has an output-side gearwheel arranged non-rotatably on the output shaft, and a drive-side gearwheel which engages therewith and is rotationally mounted loosely on the drive-side hollow shaft of the first sub-transmission, and in that the drive-side gearwheel of the fourth wheel plane (RE-4) can be coupled to the drive-side hollow shaft of the first sub-transmission by a third shift element (SE-D), and in that the second sub-transmission has a fifth wheel plane (RE-5) which has a drive-side gearwheel rotationally mounted loosely on the second input shaft, and an output-side gearwheel rotationally mounted loosely on the output shaft, and in that the output-side gearwheel of the fifth wheel plane (RE-5) can be coupled to the output shaft by a fourth shift element (SE-G).