This document discusses factors that influence consumer buyer behavior, including cultural, social, personal, psychological factors. It also outlines the typical buyer decision process of need recognition, information search, alternative evaluation, purchase decision, and post-purchase behavior. As a case study, it examines car buying behavior in Romania. It finds that culture, social influences from family, personal factors like age and income, and psychological factors like motives and attitudes all impact car purchasing decisions in Romania. Younger consumers prioritize performance while older consumers consider other factors more important.