www.fiatusaofstateline.com or call us at 888-596-6718. br The best Fiat dealership in the Charlotte, NC area is hands down Stateline Fiat Residents of Charlotte, NC all agree that Stateline Fiat has the best service, selection, and prices on all new and pre-owned Fiat vehicles. What makes Stateline Fiat the best Fiat dealer in the Charlotte, NC area? Simple, they care about their customers and they have extensive knowledge of their inventory.