Dual clutch transmission for a motor vehicle, having sets of gearwheels switchable via first to seventh switching elements which form exactly eight wheel planes (RE-1 to RE-8) arranged one after another in the axial direction from the input to the output side of the dual clutch transmission in the sequence first to eighth, said wheel planes are respectively assigned to a first sub-transmission and 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, wherein the input shafts (22, 23) coaxial to one another are alternately activatable via each power shiftable clutch (K1, K2) and the even forwards gears (2, 4, 6, 8, 10, 12 - Fig. 2) are assigned to the first sub-transmission and the odd forwards gears (1, 3, 5, 7, 9, 11 - Fig. 2) are assigned to the second sub-transmission which are switchable in the case of a gear change via the first to seventh switching elements (SE-A to SE-G), wherein each wheel plane (RE-1 to RE-8) provides respectively one direct gear (3, 4, 5, 6, 7, 8, 11, 12 - Fig. 2) as a forwards gear, in the case of which when the first or second sub-transmission (A, B) is activated, exactly one wheel plane is switched in the torque flow running through the activated first or second sub-transmission (A, B) and wherein the wheel planes (RE-1 to RE-8) also provide at least one twist gear as a forwards gear, in the case of which exactly three wheel planes combined in a row are respectively switched in the torque flow by means of the first to seventh switching elements (SE-A to SE-G), characterised in that in total four twist forwards gears (1, 2, 9, 10 - Fig. 2) can be provided for the in total eight wheel planes (RE-1 to RE-8), and in that the three wheel planes switched for each twist gear (1 st, 2 nd, 9 th, 10 th gear) are assigned either completely to the first sub-transmission or completely to the second sub-transmission such that in the case of each switched twist forwards gear only the sub-transmission, which has the three wheel planes switched for the respective twist gear, is integrated in the torque flow and the other sub-transmission is completely decoupled from the torque flow, in that the first and second input shafts (22, 23) are free from gearwheels of the eight wheel planes (RE-1 to RE-8) arranged thereon in a torque-proof manner and in that the first input shaft has exactly one first switching element (SE-C) switchable on both sides in the axial direction and the second input shaft has exactly one second switching element (SE-A) switching on both sides in the axial direction and in that the first input shaft is couplable by means of the first switching element (SE-C) to the first to fourth wheel planes (RE-1 to RE-4) of the first sub-transmission or is decouplable therefrom and in that the second input shaft is couplable by means of the second switching element (SE-A) to the fifth to eighth wheel planes (RE-5 to RE-8) of the second sub-transmission or is decouplable therefrom, in that a drive-side idler gearwheel of the first wheel plane (RE-1) mounted on the first input shaft is arranged in the axial direction of the first switching element (SE-C) on its one side and a drive-side hollow shaft of the first sub-transmission mounted coaxially on the first input shaft is arranged on the other side of the first switching element (SE-C) which are couplable via the first switching element (SE-C) alternately with the first input shaft and in that the drive-side hollow shaft of the first sub-transmission carries a fixed gearwheel of the second wheel plane (RE-2) and a fixed gearwheel of the third wheel plane (RE-3) in that a drive-side gearwheel of the fourth wheel plane (RE-4) is mounted loosely on the drive-side hollow shaft of the first sub-transmission and in that the drive-side hollow shaft of the first sub-transmission is couplable via a third switching element (SE-D) to the loosely-mounted drive-side gearwheel of the fourth wheel plane (RE-4), in that the second sub-transmission comprises the fifth wheel plane (RE-5) directly adjacent to the first sub-transmission in the axial direction and in that the fifth wheel plane (RE-5) is couplable to the first sub-transmission by means of the third switching element (SE-D), in that the fifth wheel plane (RE-5) switchable on both sub-transmissions (A, B) is loosely mounted with its drive-side gearwheel on the second input shaft and in that the drive-side gear wheel of the fifth wheel plane (RE-5) is couplable to the drive-side hollow shaft of the first sub-transmission by means of the third switching element (SE-D) and in that the output-side gearwheel of the fifth wheel plane (RE-5) switchable on both sub-transmissions (A, B) is loosely mounted on the output shaft and is couplable to the output shaft via a seventh switching element (SE-G).