At Dennis Hyundai we offer knowledgeable sales associates and highly trained service technicians. We also have a large inventory with over 300 cars to choose from and a fully stocked parts department. Dennis Hyundai is located in Columbus, OH. At Dennis Hyundai we offer knowledgeable sales associates and highly trained service technicians. We also have a large inventory with over 300 cars to choose from and a fully stocked parts department. Dennis Hyundai is located in Columbus, OH.