Dream about buying expensive car means the primitive, unruly aspect of yourself. Your old habits and old ways of doing things is hindering your progress. You do not underestimate yourself or others. This dream is a symbol for your independent nature and your tendency to reflect on your thoughts alone. You are harboring some inner guilt that you are harboring.
Buying expensive car dream is a signal for an aspect of your life or an opportunity that is closed off to you. You may be jeopardizing your health with your reckless behavior. Your lack of action may stem from your shyness which you must overcome. This dream is a harbinger for aspects of your own self that you are rejecting or refusing to acknowledge. Your emotions are very superficial and shallow.
If you dreamt about buying expensive car:
Usually when you wish to pursue a certain course of action without being disturbed you tend to withdraw and refuse to discuss the situation. Right now you are happy to tell a loved one that you want what you want and fully intend to get it, whether they approve of your plans or not.