Gross domestic product rose 5.2 per cent in the three months to Sept 30 from a year earlier, the median of 26 estimates in a Bloomberg News survey shows ahead of a report due Nov 30. That would be the least since 3.5 per cent in January-to-March 2009.
Mr Singh's revamp to lure foreign investors has been hampered by trade and budget deficits that have hurt the rupee, whose 3.6 per cent drop versus the US dollar in the past month is the world's worst. Opposition to his push to open industries such as retail, pensions and insurance to overseas companies risks gridlock in Parliament, dimming the outlook for Asia's No. 3 economy.
"India needs to revive investment, but that will happen only when inflation and the fiscal deficit come down and reforms accelerate," said Sonal Varma, an economist at Nomura Holdings Inc in Mumbai. "Without all that, growth and the rupee may remain under pressure."