This study was to analyze the Influence Motivation, Perceptions and Attitude Consumer Car Buying Decision Against Trademark Avanza in Yogyakarta. Subjects in this study is the consumer brand of Avanza car in Yogyakarta. This study used a sample of 50 respondents by the number selected by the accidental sampling method. The analysis tool used is to use Moderator Regression Analysis (MRA). Based on the analysis that has been done shows that motivation positive and significant effect on buying decision, perception of positive and significant impact on purchasing decisions, attitudes positive and significant impact on purchasing decisions.