Nissan Motor (7201.TYO) announced it will expand its annual capacity in China to one million vehicles from 670,000 by the fiscal year ending March 2013, as it looks to catch up to its competitors in the world’s largest car market, the Wall Street Journal reported. While China is crucial for Nissan’s profitability, the carmaker has struggled to keep pace with the country’s surging auto demand. In its fiscal fourth quarter which ended March 31, Nissan said its China sales rose 48% from a year earlier, but was slower than the 58% growth in the overall market because of Nissan’s limited capacity. Nissan is targeting a 14% sales rise in China to help meet its record global sales target of 3.8 million vehicles. Nissan’s president and chief executive, Carlos Ghosn, said the company will first evaluate growth in China this year and then make decisions on further expansion.