This research investigates the design, simulation, and experimental validation of a hybrid cooling system for automotive applications that integrates liquid cooling and thermoelectric elements to improve heat dissipation efficiency. Conventional engine cooling systems face performance limitations under high thermal loads, resulting in decreased fuel efficiency and increased wear. The proposed hybrid design uses a liquid coolant circulation loop for bulk heat removal and a thermoelectric module for precise temperature control. Computational fluid dynamics (CFD) analysis was carried out to model coolant flow patterns and optimize radiator fin geometry. Experimental tests were conducted on a scaled prototype under varying load conditions. Results indicate a 15�20% improvement in heat transfer efficiency and a 10% reduction in engine operating temperature compared to traditional systems.