A transmission for a vehicle includes first and second input interfaces, an output interface, first and second speed ratio transmission sections, first and second planetary transmission sections, and a coupling section. The first input interface is arranged for coupling to an internal combustion engine. The second input interface is arranged for coupling to an electric motor. The first planetary transmission section has an internal gear connected to the first input interface, a planet carrier connected to the second input interface, and a sun gear connected to an input of the first speed ratio transmission section. The second planetary transmission has an internal gear connected to the first input interface, a planet carrier connected to the second input interface, and a sun gear connected to an input of the second speed ratio transmission section. The coupling section supports the respective planet carriers against one another in at least one operating mode.