Dual clutch transmission for a motor vehicle, comprising gear sets which can be shifted by shift elements and which form precisely eight gear stages (RE-1 to RE-8) arranged in the axial direction from the input side to the output side of the dual clutch transmission in the order first to eighth, which each belong to a first sub-transmission and a second sub-transmission, of which the first sub-transmission comprises a first input shaft and the second sub-transmission comprises a second input shaft, and both sub-transmissions (A,B) comprise a common output shaft, wherein the coaxial input shafts (22, 23) can be activated in alternation via respective power-shiftable clutches (K1, K2), and wherein the even forward gears (2, 4, 6, 8, 10, 12) belong to the first sub-transmission and the odd forward gears (1, 3, 5, 7, 9, 11) belong to the second sub-transmission, which during a gearshift can be shifted by shift elements (SE-A to SE-G), wherein the gear sets of the first to fourth gear stages (RE-1 to RE-4) form the first sub-transmission and the gear sets of the fifth to eighth gear stages (RE-5 to RE-8) form the second sub-transmission, wherein the input shafts (22, 23) have no rotationally fixed gears of the gear stages (RE-1 to RE-8) arranged thereon, characterised in that each input shaft (22, 23) comprises exactly one shift element (SE-A and SE-C) shiftable on both sides in the axial direction, and in that, by means of the first shift element (SE-C), the first input shaft can be coupled to or uncoupled from all of the first to fourth gear stages (RE-1 to RE-4) of the first sub-transmission, and in that, by means of the second shift element (SE-A), the second input shaft can be coupled to or uncoupled from all of the fifth to eighth gear stages (RE-5 to RE-8) of the second sub-transmission, in that in the axial direction of the first shift element, (SE-C) on one side a drive-side idler gear of the first gear stage (RE-1) is arranged mounted on the first input shaft of the first sub-transmission and on the other side of the first shift element (SE-C) a drive-side hollow shaft is arranged coaxially mounted on the first input shaft, which can be coupled in alternation to the first input shaft by means of the first shift element (SE-C), and in that the drive-side hollow shaft of the first sub-transmission carries a fixed gear (30, 33) of the second or third gear stage (RE-2, RE-3), in that a drive-side gear of the fourth gear stage (RE-4) is loosely mounted on the drive-side hollow shaft of the first sub-transmission, and in that the drive-side hollow shaft of the first sub-transmission comprises a third shift element (SE-D), by means of which the loosely mounted drive-side gear of the fourth gear stage (RE-4) can be coupled to the drive-side hollow shaft, in that the second sub-transmission comprises the fifth gear stage (RE-5) immediately adjacent in the axial direction to the first sub-transmission, and in that the fifth gear stage (RE-5) can be coupled to the first sub-transmission by means of the third shift element (SE-D), in that the fifth gear stage (RE-5) that is shiftable on both sub-transmissions (A, B) is loosely mounted on the second input shaft by means of its drive-side gear, and in that the drive-side gear of the fifth gear stage (RE-5) that is shiftable on both sub-transmissions (A, B) can be coupled to the drive-side hollow shaft of the first sub-transmission by means of the third shift element (SE-D), and in that the output-side gear of the fifth gear stage (RE-5) is loosely mounted on the output shaft and can be coupled to the output shaft by means of a seventh shift element (SE-G).