Modular motor vehicle transmission for longitudinal installation in a motor vehicle, with - an input shaft arrangement which can be connected to an output member of a clutch arrangement, - an output shaft which can be connected to drive wheels (30R, 30L) or to a differential, - a countershaft which is arranged parallel to the input shaft arrangement, - a plurality of gear sets (24/26, 24/64/66, 64/24) for setting up gear stages (R; 1; 2; 3; 4; 5; 6; 7), the gear sets (24/26, 24/64/66, 64/24) being mounted in each case on the input shaft arrangement and the countershaft and connecting them to one another, and the gear sets (24/26, 24/64/66, 64/24) in each case having a fixed gear (26, 26-2, 26-3, 26-4, 26-5, 26-6, 64) and a movable gear (24, 24-1, 24-2, 24-3, 24-4, 24-5, 24-6, 24-R) and being capable of being selected by means of respective shifting clutches (36, 36-7, 36-R) in order to set up the gear stages (R, 1, 2, 3, 4, 5, 6, 7), the shifting clutches being combined at least partially to form shifting clutch packs, - a housing, in which the shafts (18, 20, 22) and the gear sets (24/26, 24/64/66, 64/24) are received, and - a bearing arrangement (32a, 32b, 32c, 32d, 32e, 32f, 32g) for mounting the shafts (18, 20, 22) on the housing, which bearing arrangement (32a, 32b, 32c, 32d, 32e, 32f, 32g) is configured in such a way that a first variant and a second variant of the motor vehicle transmission can equally be constructed by way of the said bearing arrangement (32a, 32b, 32c, 32d, 32e, 32f, 32g), the motor vehicle transmission being constructed in the first variant with a first number of forward gear stages (1; 2; 3; 4; 5; 6) and being constructed in the second variant with a further forward gear stage, characterized in that the gear sets (24/26, 24/64/66, 64/24) and associated shifting clutches and shifting clutch packs (70, 70a, 70b, 70c, 70d) are selected in the two variants in such a way that a manual shifting operation is possible, with the result that the motor vehicle transmission can be realised in the two variants as a manual transmission with an H-gate shifting apparatus, which manual transmission is not actuated automatically, the H-gate shifting apparatus having a gearshift lever which can be displaced in a shift guide plate, the countershaft and the output shaft being connected to one another via an output constant gear set, exclusively the output constant gear set and precisely one further gear set (24/26) being arranged in the two variants between a transmission output-side transmission cover and a bearing plate, as viewed in the axial direction. - an input shaft arrangement which can be connected to an output member of a clutch arrangement, - an output shaft which can be connected to drive wheels (30R, 30L) or to a differential, - a countershaft which is arranged parallel to the input shaft arrangement, - a plurality of gear sets (24/26, 24/64/66, 64/24) for setting up gear stages (R; 1; 2; 3; 4; 5; 6; 7), the gear sets (24/26, 24/64/66, 64/24) being mounted in each case on the input shaft arrangement and the countershaft and connecting them to one another, and the gear sets (24/26, 24/64/66, 64/24) in each case having a fixed gear (26, 26-2, 26-3, 26-4, 26-5, 26-6, 64) and a movable gear (24, 24-1, 24-2, 24-3, 24-4, 24-5, 24-6, 24-R) and being capable of being selected by means of respective shifting clutches (36, 36-7, 36-R) in order to set up the gear stages (R, 1, 2, 3, 4, 5, 6, 7), the shifting clutches being combined at least partially to form shifting clutch packs, - a housing, in which the shafts (18, 20, 22) and the gear sets (24/26, 24/64/66, 64/24) are received, and - a bearing arrangement (32a, 32b, 32c, 32d, 32e, 32f, 32g) for mounting the shafts (18, 20, 22) on the housing, which bearing arrangement (32a, 32b, 32c, 32d, 32e, 32f, 32g) is configured in such a way that a first variant and a second variant of the motor vehicle transmission can equally be constructed by way of the said bearing arrangement (32a, 32b, 32c, 32d, 32e, 32f, 32g), the motor vehicle transmission being constructed in the first variant with a first number of forward gear stages (1; 2; 3; 4; 5; 6) and being constructed in the second variant with a further forward gear stage, characterized in that the gear sets (24/26, 24/64/66, 64/24) and associated shifting clutches and shifting clutch packs (70, 70a, 70b, 70c, 70d) are selected in the two variants in such a way that a manual shifting operation is possible, with the result that the motor vehicle transmission can be realised in the two variants as a manual transmission with an H-gate shifting apparatus, which manual transmission is not actuated automatically, the H-gate shifting apparatus having a gearshift lever which can be displaced in a shift guide plate, the countershaft and the output shaft being connected to one another via an output constant gear set, exclusively the output constant gear set and precisely one further gear set (24/26) being arranged in the two variants between a transmission output-side transmission cover and a bearing plate, as viewed in the axial direction.