G N Auto Inc Dba Usa Car Sales is praised for its helpful service, especially from a staff member named Julio. Many customers highlight Julio's ability to assist them, even with bad credit, and appreciate his patience and thorough explanations throughout the car-buying process. He is recognized for helping clients find cars that fit their needs and budgets, making the experience fast and easy. However, there are concerns regarding the business practices of the owner and manager, with one customer alleging issues with down payments and suggesting they are untrustworthy. Overall, while Julio receives high marks for his service, potential customers should be aware of mixed experiences regarding the management.