This research is on Design and implementation of an online car renting system, a case study of Gusau motors. This project was centred on car rental system. The current process of car rentals is being operated manually and due to this procedure numerous problem are been encountered. A design was taken to computerized the manual process in order to check this problem. The problems were identified after series of interviews and examination of documents after which analysis was made and a computerized procedure recommended. The Research methodology used in this project research is the SSADM (Structured System Analysis and Design Method). This work also suggested how to successfully implement the computerized procedure and to overcome the obstacle that would hinder the successful implementation of the system. The new system was designed using PHP (Pre-processor Hypertext) and MySQL. This language was chosen because of its easy syntax and features for developing web-based applications.