Choosing the appropriate cooling method significantly affects the amount of heat extraction from the electrical machine. This improvement in heat extraction directly impacts the power rating of the electric machine and the reliability of temperature-sensitive components such as insulation materials and magnets. As the electric motors used in electric vehicle (EV) traction drive applications have compact structures, the conventional cooling methods cannot provide sufficient heat transfer. Accordingly, this paper presents a survey on the oil spray cooling approach as the new cooling methodologies implemented in these motors. This study aims to introduce the cooling system and describes the method’s capability to cool the electrical machine. Furthermore, it tries to get a broader view of the reader about implementing this cooling method on the EV electrical motors.