Air-conditioning system for motor vehicle

A motor vehicle, comprising:

• a vehicle interior,
• an air-conditioning system for air-conditioning the vehicle interior, the air-conditioning system including:
• a refrigerant circuit for being flowed through by a refrigerant, wherein in the refrigerant circuit a compressor for compressing the refrigerant, a condenser for condensing the refrigerant subject to passing condensation heat on to a fluid conducted through the condenser, an expansion device for expanding the refrigerant and an evaporator for evaporating the refrigerant are arranged,
• a coolant circuit provided fluidically separated from the refrigerant circuit for being flowed through by a coolant,
• a first heat source and a second heat source fluidically connected in series arranged in the coolant circuit for heating the coolant,
• wherein the coolant circuit includes a bypass where the coolant can be conducted past the second heat source,
• wherein the bypass comprises a fluidic parallel connection, and wherein the fluidic parallel connection is arranged in series with the first heat source, so that the coolant cannot be conducted past the first heat source, and
• wherein the coolant circuit is thermally connected to the refrigerant circuit via the evaporator of the refrigerant circuit, so that in the evaporator heat from the coolant is transferrable to the refrigerant.