The Chinese-built Buick Regal was also sold in the Philippines from 2005 to 2006 as the Chevrolet Lumina. GM had withdrawn from the Philippines in 1985 along with Ford, finding the political and economic situation there at the time was untenable. This left just Nissan, Toyota and Mitsubishi operating in the Filipino market. In 1997, GM returned with the Opel brand, and introduced the Opel Vectra, Opel Omega and, shortly thereafter, the Opel Tigra and Opel Astra. In 2000, Chevrolet returned with the Chevrolet Suburban and GMC Savana, and GM dealerships were branded as GM AutoWorld. But Opel struggled in the Filipino market and by 2000 the market was still dominated by Japanese automakers who accounted for 80% of the total market (Koreans were the next biggest players with 15%). The Vectra struggled against rivals like the Nissan Cefiro, Honda Accord and Toyota Camry. GM withdrew the brand in 2003, leaving the corporation without a car in the mid-size segment. And in 2005, GM Philippines introduced Chevrolet Lumina, due to the growing mid-size sedan market.