General Motors Corp (GM), the world's largest automaker, last year quadrupled its unit sales in China, the world's fastest-growing auto market.

GM's sales in China, which include imports and domestically made vehicles, reached 264,101 units last year, up 325 per cent from a year earlier, GM officials announced last week in a statement.

"The great achievement resulted mainly from our strategies of strengthening localization in China and co-operation with local partners," said Phil Murtaugh, president of GM China Group.

"It fully demonstrates GM's China operation has become one part of China's automotive industry," Murtaugh added.

GM last year sold 8.376 million vehicles throughout the world, company officials said. "We will launch at least four new models this year in China to cement our leadership in the market, and to better meet local consumers' demands," Murtaugh said.