The fairly recent uptake of electric vehicles has brought about the importance of innovative power electronic for improved performance and efficiency. The study is concerned with generic approaches for power electronics for future generation of electric vehicles with special emphasis to system efficiency using advanced design and control methodologies. It takes stock of some of the main developments made in power semiconductor technologies such as the SiC and GaN that are believed to offer tremendous advantages in terms of power and thermal dissipation. The method of literature review examines basic issues and future prospects in the power electronics, especially in the battery management systems, DC–DC converters, and inverter controls. This is in respect of the need for predictive and adaptive control strategies in improvement of efficiency and reliability of EV power systems. The way of research is based on the assessment of energy saving measures using numerous experimental data and simulation results of various aspects of energy efficiency. We study the effects of state of art cooling techniques, high efficient converters and enhanced control algorithms on the efficiency of power electronics of EV.