Vehicle sales for GM and its joint venture partners fell 4.8 percent year-on-year in August, while Ford Motor Co (F.N) and Nissan Motor Co Ltd also reported contracting sales for the month, highlighting the divide between winners and losers in the Chinese market. The figures contrast sharply with last week’s major sales gains for Toyota Motor Corp , Honda Motor Co Ltd and Mercedes maker Daimler AG (DIAGn.DE) in China, demonstrating the importance of having fresh, in-demand products to entice buyers.