The global transition toward sustainability and decarburization has positioned Electric Vehicles (EVs) at the forefront of future mobility. While EVs inherently offer lower emissions compared to internal combustion engine (ICE) vehicles, optimizing their energy efficiency remains a critical challenge to ensure their viability, affordability, and widespread adoption. With global EV sales surpassing 10 million units in 2022 representing over 14% of the global vehicle market. Energy efficiency has emerged as a cornerstone in addressing key concerns such as range anxiety, charging infrastructure, operational costs and overall environmental impact. This paper embarks on a comprehensive journey, beginning with the historical evolution of EVs and identifying the multifaceted energy losses that occur during vehicle operation. By mapping the energy distribution within a typical EV, the study lays a foundational understanding of where and how inefficiencies arise. It then explores current technological trends and reviews a wide array of existing strategies aimed at improving energy efficiency, including advancements in battery chemistry, drivetrain optimization, and regenerative systems. The role of charging infrastructure, energy management systems, and supportive policy frameworks is also examined to provide a holistic view of the ecosystem affecting EV energy consumption. A novel contribution of this paper is the development and application of a Four-Pillar Strategy encompassing vehicle-level innovations, component-level optimizations, driver behavior adaptations, and vehicle feature enhancements to systematically reduce energy consumption. The effectiveness of each pillar is analyzed in terms of technical impact, cost, and feasibility. Furthermore, the paper introduces two detailed mathematical models: one quantifying energy savings over a 10 km vehicle trip using the four-pillar approach, and another examining the influence of external environmental factors such as topography, temperature, and wind on energy demands. By bridging theoretical insights with practical strategies, this work offers valuable guidance for automotive manufacturers, policymakers, and researchers. The integrated approach presented here not only supports the industry's goal of achieving greater energy efficiency but also strengthens the long-term sustainability and competitiveness of EVs in a rapidly evolving transportation landscape.