A compact electric motor assembly unit includes an electric motor and an integrated thermal management system. A heat exchanger may be mounted directly to the electric motor and/or form part of the motor housing. A coolant pump may be mounted directly to the electric motor, The coolant pump may be connected either to a drive shaft of the electric motor or to a gear train disposed inside of the electric motor. In certain cases, the coolant pathways for the thermal management system are all located internal of the electric motor assembly unit.