Indian vehicle manufacturer Mahindra and Mahindra has increased its stake in the joint venture with its South African partner to 90 percent from 51 percent, and invested a further 30 million rands ($3 million) in the country’s automotive business. Mahindra South Africa, which launched its new multipurpose vehicle Xylo here last week, also expressed confidence in the South African auto market, though other manufacturers reported record drops in sales in the wake of the global economic downturn.