Website: https://www.platinumcarsmarietta.com/ ,, ,, Address: 1215 Cobb Parkway SE, Marietta, GA 30060 ,, ,, Phone: +1 678-355-5222 ,, ,, Platinum Cars Marietta is a family owned used car dealership in Marietta, GA. Our inventory caters to all budgets and needs. Visit our showroom or shop online for a huge deal on a low mileage or reduced priced car.