The efficiency of firefighting vehicles is crucial for effective fire suppression, firefighter safety, and the overall success of emergency response operations. This study investigates the impact of key technical parameters - such as water tank capacity, pump performance, fuel efficiency, and maneuverability - on operational effectiveness across diverse fire scenarios. A mixed-method approach was adopted, combining computational simulations, empirical performance assessments, and structured interviews with firefighting professionals from multiple regions. Findings underscore the need for region-specific vehicle configurations, as urban, rural, and forest environments each present unique operational challenges. The study further emphasizes the importance of data-driven engineering improvements and cross-border knowledge exchange to enhance vehicle performance, resource efficiency, and environmental sustainability. Key engineering recommendations include the implementation of hybrid-electric powertrains, modular water tank designs, and AI-enhanced navigation systems to improve firefighting vehicle adaptability and operational efficiency.