After taking my car to half a dozen auto repair shops in Atlanta/Decatur, I've settled on Volmaz as my favorite. Volmaz takes pride in being professional and courteous. They're located in a strip mall and you never seem to see a garage. You enter a storefront that feels like a dentist's waiting room and someone will come out and go over your car's problems with you. They really listen when you describe your car's ills, which is so important. I've never seen anything that makes me doubt their honesty and they've always done good work, always fixing the problem the first time. They charge a bit more than other mechanics at $75/hour for labor, but that's probably cheaper than my last mechanic who charged $60/hour and always made up for it by taking twice as long to fix anything. They work on Volvos, Mazdas, BMWs, and Mercedes.