Motor vehicle comprising - an internal combustion prime mover that has an internal combustion engine, - an electric traction motor, - a traction battery, and - a cooling system comprising a main cooling circuit assembly in which the internal combustion engine, a coolant radiator, a heater core, a first heating device by means of which heating power can be provided, an oil cooler and a distribution system are integrated, wherein - in a first operating position of the distribution system, coolant can be conveyed in a first cooling circuit comprising • the heater core and • the first heating device, - in a second operating position of the distribution system, coolant can be conveyed in a second cooling circuit comprising • the coolant radiator and • the oil cooler, - in a third operating position of the distribution system, coolant can be conveyed • in the first cooling circuit and • in a third cooling circuit comprising the internal combustion engine and excluding the coolant radiator, and - in a fourth operating position of the distribution system, coolant can be conveyed in a fourth cooling circuit comprising • the internal combustion engine and • the heater core, characterized by an additional cooling circuit assembly which is separate from the main cooling circuit assembly and in which a charging device for the traction battery and/or power electronics and the traction battery, a coolant radiator, a chiller and a distribution system are integrated, wherein - in a first operating position of the distribution system of the additional cooling circuit assembly, coolant can be conveyed • in a first cooling circuit comprising the charging device and/or the power electronics and the coolant radiator, and • in a second cooling circuit comprising the traction battery and the chiller and - in a second operating position of the distribution system of the additional cooling circuit assembly, coolant can be conveyed in a third cooling circuit comprising the charging device and/or the power electronics and the traction battery, the coolant radiator and the chiller. - an internal combustion prime mover that has an internal combustion engine, - an electric traction motor, - a traction battery, and - a cooling system comprising a main cooling circuit assembly in which the internal combustion engine, a coolant radiator, a heater core, a first heating device by means of which heating power can be provided, an oil cooler and a distribution system are integrated, - in a first operating position of the distribution system, coolant can be conveyed in a first cooling circuit comprising • the heater core and • the first heating device, - in a second operating position of the distribution system, coolant can be conveyed in a second cooling circuit comprising • the coolant radiator and • the oil cooler, - in a third operating position of the distribution system, coolant can be conveyed • in the first cooling circuit and • in a third cooling circuit comprising the internal combustion engine and excluding the coolant radiator, and - in a fourth operating position of the distribution system, coolant can be conveyed in a fourth cooling circuit comprising • the internal combustion engine and • the heater core, - in a first operating position of the distribution system of the additional cooling circuit assembly, coolant can be conveyed • in a first cooling circuit comprising the charging device and/or the power electronics and the coolant radiator, and • in a second cooling circuit comprising the traction battery and the chiller - in a second operating position of the distribution system of the additional cooling circuit assembly, coolant can be conveyed in a third cooling circuit comprising the charging device and/or the power electronics and the traction battery, the coolant radiator and the chiller.