Car companies suffer from personnel and material costs increase caused by repeated vehicle repairs. They plan to implement Car Maintenance Expert System to provide recommendations for car repair engineers to reduce repeated vehicle maintenance problems. This study uses Technology Acceptance Model to explore the use intention of maintenance receptionists of car companies to the Car Maintenance Expert System. Our results show that the Attributes of Innovation have a significant positive correlation for both Perceived Usefulness and Perceived Ease of Use. Meanwhile, Subjective Norms and Self-Efficacy are significantly positively correlated with Perceived Ease of Use. The following issues might affect the maintenance receptionists’ use intention to adopt the Expert System: the operations and interfaces of the system are very intuitive, smooth and user-friendly; the car company could provide sound education and training; and the system could make the process of current workflow more efficient and effective. The results of this study can be provided to enterprises planning to implement Expert System.