About Berlin City Nissan Come on make it Easy on yourself at Berlin City Nissan of Portland What's the Easy way? Its a philosophy of doing business that finds a way to satisfy each and every customer. Its a way of making a connection to the community by saying "we're all neighbors and we're here to make life easier." We are your Portland Nissan Dealer and your premier dealership for a great selection of Maine Used Cars. Berlin City Nissan has great deals on new Nissan and used Nissan cars and SUVs. We provide Nissan Sales, Nissan Repair and Nissan Auto Parts to Portland and the surrounding neighborhoods including Portland, South Portland, Saco, Brunswick and Somersworth.