A purely electric drive system comprising a first electric machine, a second electric machine, a differential transmission, a driven wheel and a group transmission comprising a main group and a range group, wherein the range group includes a planetary set, wherein a first input shaft of the main group is coupled or coupleable with the first electric machine such that torques from the first electric machine can be introduced into the group transmission via the first input shaft, wherein a second input shaft of the main group is coupled or coupleable with the second electric machine such that torques from the second electric machine can be introduced into the group transmission via the second input shaft, wherein an output shaft of the main group is permanently coupled with a first element of the planetary set for transmitting torque, and wherein a second element of the planetary set is permanently coupled with a driven shaft of the group transmission for transmitting torque, wherein, with respect to a torque flow from the electric machines (2, 3) to the wheel, the first electric machine, the main group, the range group, a differential wheel and the wheel are sequentially disposed in the stated order, characterised in that exactly two idler wheels (18, 19), namely a first idler wheel and a second idler wheel, are disposed coaxially to the first input shaft, wherein exactly two further idler wheels (20, 21), namely a third idler wheel and a fourth idle wheel, are disposed coaxially to the second input shaft, wherein the two input shafts (4, 5) are coupled or coupleable with the output shaft via exactly two fixed wheels (22, 23) disposed coaxially to the output shaft, wherein a first fixed wheel of the fixed wheels (22, 23) is in permanent intermeshing engagement with the first and the third idler wheel (18, 20), and wherein a second fixed wheel of the fixed wheels (22, 23) is in permanent intermeshing engagement with the second idler wheel and the fourth idler wheel, wherein a third fixed wheel is disposed coaxially to the output shaft and permanently intermeshed with a fourth fixed wheel, which is in turn non-rotatably connected to the first element of the planetary set, wherein a gear wheel non-rotatably connected to the driven shaft is intermeshed with the differential wheel, which is in turn non-rotatably connected to a differential cage of the differential transmission, wherein an axis of rotation of the first input shaft, an axis of rotation of the second input shaft, an axis of rotation of a sun shaft of the planetary set, and an axis of rotation of the differential wheel are all disposed in parallel and axially offset from one another. wherein, with respect to a torque flow from the electric machines (2, 3) to the wheel, the first electric machine, the main group, the range group, a differential wheel and the wheel are sequentially disposed in the stated order, characterised in that exactly two idler wheels (18, 19), namely a first idler wheel and a second idler wheel, are disposed coaxially to the first input shaft, wherein exactly two further idler wheels (20, 21), namely a third idler wheel and a fourth idle wheel, are disposed coaxially to the second input shaft, wherein the two input shafts (4, 5) are coupled or coupleable with the output shaft via exactly two fixed wheels (22, 23) disposed coaxially to the output shaft, wherein a first fixed wheel of the fixed wheels (22, 23) is in permanent intermeshing engagement with the first and the third idler wheel (18, 20), and wherein a second fixed wheel of the fixed wheels (22, 23) is in permanent intermeshing engagement with the second idler wheel and the fourth idler wheel, wherein a third fixed wheel is disposed coaxially to the output shaft and permanently intermeshed with a fourth fixed wheel, which is in turn non-rotatably connected to the first element of the planetary set, wherein a gear wheel non-rotatably connected to the driven shaft is intermeshed with the differential wheel, which is in turn non-rotatably connected to a differential cage of the differential transmission, wherein an axis of rotation of the first input shaft, an axis of rotation of the second input shaft, an axis of rotation of a sun shaft of the planetary set, and an axis of rotation of the differential wheel are all disposed in parallel and axially offset from one another.