Double clutch gearbox for a motor vehicle, comprising - a first input shaft and a second input shaft which are arranged coaxially with one another; - a first clutch for applying a torque to the first input shaft and a second clutch for applying a torque to the second input shaft, the clutches (2, 3) being arranged on a start side of the double clutch gearbox; - a first output shaft and a second output shaft; and - a plurality of end-side main forward gears of the first input shaft on an end side of the double clutch gearbox oriented away from the start side, and a plurality of start-side main forward gears of the second input shaft on the start side of the double clutch gearbox, wherein, with a main forward gear engaged, a torque can be transmitted from an input shaft (10, 30), without the intermediate engagement of the other input shaft (30, 10), to one of the output shafts (50, 70) which delivers the torque to a power take-off, wherein at least one additional forward gear having two coupling loose wheels (52, 54) is provided, in the case of which additional forward gear torque can be transmitted from the second input shaft to the first input shaft; wherein the two coupling loose wheels (52, 54) are arranged axially adjacent to one another on the first output shaft and can be connected non-rotatably to one another via a shiftable loose wheel clutch; wherein one coupling loose wheel of the two coupling loose wheels (52, 54), as loose wheel of a second start-side main forward gear, meshes with a fixed wheel of the second input shaft; and wherein the other coupling loose wheel of the two coupling loose wheels (52, 54), as loose wheel of a second end-side main forward gear, meshes with a fixed wheel of the first input shaft such that, when the coupling loose wheels (52, 54) are connected non-rotatably to one another, and when the second clutch applies a torque to the second input shaft, the additional forward gear is engaged by virtue of a first end-side main forward gear of the first input shaft being engaged, wherein a loose wheel (80-Fig. 4) of the first end-side main forward gear is arranged on the second output shaft (70-Fig. 4), wherein a loose wheel (61-Fig. 4) of a reverse gear is arranged on the first output shaft, wherein when the additional forward gear is engaged the second clutch transmits torque from the second input shaft to the second output shaft (70-Fig. 4) with the product of gear ratios of the second start-side main forward gear, the second end-side main forward gear and the first end-side main forward gear, wherein the first end-side main forward gear has a shortest gear ratio of the start-side main forward gears and of the end-side main forward gears, characterized in that a gear ratio of the second start-side main forward gear is shorter than a gear ratio of the second end-side main forward gear, such that the second clutch, in order to engage the additional forward gear, applies a torque from the second input shaft to the second output shaft (70-Fig. 4) with a gear ratio which is shorter than the gear ratio of the first end-side main forward gear. - a first input shaft and a second input shaft which are arranged coaxially with one another; - a first clutch for applying a torque to the first input shaft and a second clutch for applying a torque to the second input shaft, the clutches (2, 3) being arranged on a start side of the double clutch gearbox; - a first output shaft and a second output shaft; and - a plurality of end-side main forward gears of the first input shaft on an end side of the double clutch gearbox oriented away from the start side, and a plurality of start-side main forward gears of the second input shaft on the start side of the double clutch gearbox, wherein, with a main forward gear engaged, a torque can be transmitted from an input shaft (10, 30), without the intermediate engagement of the other input shaft (30, 10), to one of the output shafts (50, 70) which delivers the torque to a power take-off,