This paper addresses the challenge of effective thermal management in electric vehicles, focusing on it’s motor and battery pack. The specific high performance electric vehicle system motor is selected for its superior performance, and a custom-designed motor jacket facilitated the heat dissipation. A computer-aided design model of the motor jacket is developed and analysed using computational fluid dynamics, followed by its fabrication and validation. The effectiveness of the radiator is calculated using the effectiveness—number of transfer unit method and tested to ensure optimal heat transfer. The battery pack, designed with pouch cells, is modelled using computer-aided design, and the manufacturer cell data are analytically verified. A drive cycle is simulated using ‘optimum lap’ software to estimate thermal loads under real-time conditions, with computational fluid dynamics analysis determining the optimal configuration for inlet and outlet fans. The results of design analysis indicate that the proposed thermal management system is capable, efficient and reliable for the safety, longevity and enhanced performance of electric vehicles.