Kia and Hyundai Show Improvement in J.D. Power Quality Study. Automobiles, Hyundai Motor Co, Kia Motors Corp, J D Power & Associates, Chevrolet Division of General Motors Corp, Fiat Chrysler Automobiles NV, Honda Motor Co Ltd, Infiniti Division of Nissan Motor Co, Jeep Division of Chrysler, Lexus Division of Toyota Motor Corp, Porsche AG, South Korea