Customer satisfaction is a well-known key that plays a critical part in providing a competitive edge and assuring an organization's success. The study employs a theoretical framework consisting of the SERVQUAL Model, Rational Choice Theory, and Hypodermic Needle Theory as an underlying basis on which the independent variables will be tested. Data for this research was obtained from 400 respondents via an online questionnaire and analyzed using the SPSS software. The overall goal of the study was to gain a better understanding of customer satisfaction while focusing on the underlying factors (service quality, convenience factor, and promotion) and their relationship to customer satisfaction at Malaysian petrol stations. At the same time, the research was meant to help business owners and oil companies improve and grow their operations by giving them useful information.