本文结合对《物权法》第24条“登记对抗”的理解,对机动车交易物权变动在我国不同民事法律阶段的民事法律效力作了较深入的研究,这对我们正确理解机动车物权的效力具有指引作用。在现实生活中,分析机动车的物权变动首先要找寻求其适用的法律背景,否则,在错误的逻辑起点上的科学论证也只能导致错误的结果。 This article, combined with the understanding of Article 24 of the Real Right Act, “Registration Confrontation”, makes a more in-depth study on the civil legal effects of the change of motor vehicle ownership in different stages of civil law in our country. The effectiveness of the right has a guiding role. In real life, analyzing the change of ownership of motor vehicles must firstly seek the applicable legal background. Otherwise, the scientific argumentation on the wrong logical starting point can only lead to the wrong result.