This research was performed at a Gasoline Service Station located in Chimbote. In particular, customer loyalty to the quality of the service provided has been studied, because a fundamental aspect of the success of a company is to get a loyal customer, who repeats his visit to the station assiduously, recommends the service to others and can tolerate an occasional failure, but without deserting, all thanks to the relationship generated over time. The research methodology has an explanatory scope, a non-experimental design with a quantitative approach being the independent variable of study, quality of service and the dependent variable customer loyalty. A questionnaire was used as an instrument using the SERVPERF methodology, employing the Likert scale to evaluate the level of customer loyalty. This was applied to a sample of 122 customers, with the result that the company provides quali...