Not Recommended by brooke: Stay away from this business!! I went to them to see if they could determine why my check engine light was on. They said they could. After using their diagnostic device the mechanic said I needed to sign some papers and that I owed them $80. The mechanic claimed he told me there would be an $80 charge prior to doing the work. He hadn't! If he had, I would have instead gone to Auto Zone which does the check for free and takes about 1 minute to do it. I refused to pay and went to Auto Zone where they did it at no charge. On prior occasions Mopac Auto Service changed the oil without asking when I went in for an inspection and tried to charge me $29.95 for it. I will not be going back due to their unethical practices. (November 28th 2007)