The term "car manufacturer" refers to a company or corporation that designs, builds and sells automobiles. These companies have factories where they assemble vehicles using various components made by different suppliers. Car manufacturing is a complex process involving design, engineering, production, marketing and sales. Some of the world's largest car makers include Toyota, General Motors, Volkswagen Group, Ford Motor Company, Honda, Nissan, Hyundai Kia Automotive Group, Renault-Nissan Alliance, PSA Peugeot Citroen, Fiat Chrysler Automobiles and Tesla. These companies compete in the global market to produce vehicles that meet consumer demand for safety, fuel efficiency, comfort and style while also meeting regulatory requirements for emissions and safety.