The use of brushless direct current motors in electric/hybrid vehicles is increasing due to several advantages, such as the absence of rotor copper losses, high efficiency, smaller volume compared to motors of the same power, silent operation, and low maintenance requirements. In this study, the parameters of a surface-mounted permanent magnet brushless DC motor with an external rotor, designed for use in electric bicycles, were taken as a reference. Based on these parameters, an improved motor design with low cost and high output torque was aimed for. Different slot-to-pole ratio ranges were considered for each of the four different slot/pole models.  To obtain performance data for the motors, ANSYS Maxwell is used for analyzing both the conventional model and the consequent pole model, respectively. Parameters such as cogging torque, power, and efficiency were calculated using ANSYS/Maxwell 3D software to obtain results that closely resemble application performance. The analysis shows improvements in torque, output power, total mass, and cost parameters for the consequent pole brushless DC motor compared to the conventional external rotor brushless DC motor with the same power and speed. In both models, the increase in operating temperature caused a decrease in engine performance data. However, while there was no significant difference in terms of total motor mass between the models, the average efficiency of the conventional outer rotor BLDC motor was approximately 8,8% higher. Conversely, the consequent pole brushless DC motor was approximately 45% more affordable in terms of total cost. Thus, the 36-slot, 38-pole consequent pole outer rotor BLDC motor was determined to be more suitable than the different slot-pole combinations considered in this study. This design is expected to make a significant contribution to research on the cost-effective production of lightweight electric vehicles.