Shares of automobiles companies are trading firm in morning deals on the bourses after reporting a slightly better-than-expected sales numbers for the month of September 2013 and expectations of better monsoons may revive growth during the festival season. Bajaj Auto, Hero MotoCorp, Mahindra and Mahindra (M&M), Maruti Suzuki India and Tata Motors are up 1-3% on the Bombay Stock Exchange (BSE). The BSE auto index was up 2% as compared to 1.2% rise in benchmark index at 1035 hours. Among the individual stocks, Bajaj Auto has rallied 3% at Rs 2,078 on posting 2.1% year-on-year (yoy) growth in total sales at 367,815 units driven by 10.2% yoy growth in exports during September. On a month-on-month (mom) basis, total sales grew by 17.8% led by the inventory build-up ahead of the festival season in anticipation of the strong demand. The growth was driven by 16.3% and 30.7% mom growth in the motorcycle and three-wheeler sales respectively.