The rapid growth of urbanization and vehicular traffic demands smarter, more efficient fuel dispensing systems. This paper presents the design and implementation of an Automated Petrol Pump System using Radio Frequency Identification (RFID) technology. The proposed system eliminates manual intervention in fuel dispensing by automatically authenticating users through RFID cards and controlling the fuel pump using an Arduino-based microcontroller. When a user presents their RFID card to the reader, the system verifies the user identity, checks the pre-loaded balance, activates the relay to start the fuel pump, and precisely measures the dispensed fuel quantity using a flow sensor. The transaction details are displayed on an LCD screen in real time. The system ensures accuracy, security, and reduced human error in fuel management. Experimental results confirm that the system operates reliably with an RFID identification time of under one second and fuel measurement accuracy within ±1%. The proposed solution is highly scalable and applicable to petrol stations, corporate fleet management, and smart city infrastructure.