This study investigates the effect of supply chain processes on corporate performance in Egypt's automotive industry, focusing on the moderating effect of USD availability. It aims to understand how supply chain dimensions—such as Just-In-Time Production (JITP), Total Quality Management (TQM), influence key performance metrics like sales growth, efficiency management of automotive industry. The research utilized a quantitative design investigation techniques. A quantitative survey data and structural equation modelling analysis was employed to study relationships between different variables. Extensive analysis shows that sound supply chain strategies create major boosts in corporate performance that USD shortages temper by causing performance issues and expense increases while affecting operational procedures JITP and TQM for increasing product sales and efficiency management. The research outcomes show practitioners should expand their supplier networks and establish domestic production facilities while building information technology platforms to reduce currency-related operational risks. Government officials need to establish equal USD availability and drive domestic industries toward expansion and invest in technology tools that boost supply chain speed and market competitiveness. The present research advances supply chain performance research through the investigation of USD availability as an influence factor. Research combining quantitative provides comprehensive knowledge about supply chain operations in emerging markets and generates practical guidelines for navigating financial uncertainties.