In recent vehicle safety assessments, the significance of simulation-based approaches has been steadily increasing. Among the four evaluation areas defined by Euro NCAP, the crash avoidance area introduces the VTA framework to evaluate advanced driver assistance systems (ADAS). This study presents the implementation and automation of a virtual simulation environment using CarMaker, incorporating diverse road models and scenarios to conduct VTA. This process includes in-house qualification to validate the simulation tool and final scoring. Through this approach, the paper illustrates how CarMaker can be effectively used to fulfill the requirements of Euro NCAP 2026.