Electric vehicles (EVs) have emerged as a cornerstone of sustainable transportation, offering significant reductions in greenhouse gas emissions and improved energy efficiency compared to traditional internal combustion engine vehicles. This study evaluates the performance of the VinFast VF e34 electric vehicle under various standardized test cycles WLTC, FTP-75, NEDC, and JA using AVL Cruise simulation software. The analysis focuses on key performance metrics, including battery voltage stability, current intensity, state of charge (SOC), power output, and motor torque across diverse driving conditions Results indicate that driving cycles such as WLTC and FTP-75 demonstrate more realistic energy consumption patterns, with significant battery voltage drops and current fluctuations reflecting real-world conditions. Conversely, the NEDC and JA cycles exhibit more stable performance metrics but fail to fully replicate practical driving scenarios. This study highlights the critical role of driving modes, energy regeneration, and drivetrain optimization in enhancing battery efficiency and extending vehicle lifespan. These findings contribute to the development of more robust and sustainable EV systems, addressing both environmental challenges and the evolving demands of modern transportation.