Sensex gains around 500 points; Tata Motors surges

MUMBAI (Reuters) - The Sensex and the Nifty gain more than 2.5 percent on Tuesday as blue chips rallied after the rupee rose to a two-week high as receding geopolitical risks from Syria and strong exports in August helped improve sentiment.

Gains were also spurred by the 18 billion rupees worth of buying in Indian cash shares by foreign investors in the previous two sessions.

Top Sensex gainers - Tata Motors rises around 8 percent, HDFC gains 6.6 percent, L&T gains 6.3 percent

BSE auto index gains 4.7 percent.