A Dissertation Submitted in Partial Fulfilment of the Requirements for Award of the Degree of Master of Business AdministrationCorporate Management (MBA-CM) of Mzumbe UniversityThe study was set to explore the influence of advertisement on the success of oil retailing industry in Tanzania. The research study aimed at answering the four specific objectives including; establishing the forms and types of advertising promotion adopted by MOGAS Tanzania limited, examining the extent in which advertisement relates with the sales performance at MOGAS Tanzania limited, examining the extent in which advertisement relates with the consumer behavior at MOGAS Tanzania limited and examining the extent in which advertisement relates with promotion of the brand of MOGAS Tanzania limited. The researcher used well-prepared structured questionnaires and interview data collection methods to obtain findings of the study. Data were collected and analyzed by descriptive analysis and correlation analysis technique while considering 80 respondents as a sample size. The study findings revealed that the direction relationship among the identified variables “increases the revenue, leads to more sales volume quickly, builds long term profitability and strengthen relationship with customers” were positive correlated in representing the relationship between advertisement and sales performance. It was also revealed that the direction of the relationship among the identified variables “reinforces consumers’ decisions, increase of customers satisfaction, reinforces consumers’ attitude and enhance consumers’ awareness” were positive correlated implying that these variables tend to effect together in representing the magnitude of consumers’ behavior. Therefore the magnitude or strength of the association/relationship between advertisement and consumers’ behavior was found to be absolute strong. The study findings further revealed that there is a strong relationship between advertisement and the promotion of the brand. The researcher suggests that the management of MOGAS Tanzania limited should use other forms of adverting like sponsoring events and use of mobile phone advertising. This will increase awareness about the various products offered by the given company.