TOKYO, Oct 11 (Reuters) - Toyota Motor Corp has"high hurdles" to achieving its Lexus luxury brand's 2012 globalsales target of 500,000 vehicles after sales of Japanese carbrands plummeted in China, a company executive said on Thursday.

"There is the issue of China, and the hurdles are very high.But we still have three months left, so we are doing our best toachieve that target," Kiyotaka Ise, a Managing Officer of Toyotawho heads Toyota's luxury brand Lexus, told reporters.