NEW DELHI: Domestic passenger vehicle sales grew 11.32 per cent to 3,09,955 units in September, from 2,78,428 in the same month last year, according to data released by industry body Society of Indian Automobile Manufacturers ( SIAM ). Car sales went up 6.86 per cent to 2,08,656 units as against 1,95,259 units in September last year. Motorcycle sales last month jumped by 6.98 per cent to 12,69,612 units compared to 11,86,759 units in September 2016.Good monsoons led to improved buying in rural areas pushing two-wheeler sales up by 9.05% to 20,41,024 units compared to 18,71,621 in the year-ago month.Sales of commercial vehicles rose by 25.27 per cent to 77,195 units in September, SIAM said.Vehicle sales across categories registered a growth of 10 per cent to 24,90,034 units, from 22,63,620 in September 2016, it added.