Nissan Motor Co. has reported robust growth in its group net profit for the fiscal first half and is maintaining its full-year profit forecast despite lowering its projection for global sales on weaker performance in China.

Nissan, Japan's second-largest carmaker by volume, posted on Tuesday a group net profit of ¥237 billion for the six months to Sept. 30, up 24.9 percent from the same period last year, as solid growth in North America, Europe and China offset sluggish domestic sales.

Operating profit rose 18 percent to ¥261.94 billion as sales increased 8.2 percent to ¥5.14 trillion.