It was a day when nothing worked for the markets as a private survey showed that India manufacturing growth dropped to a nearly two-year low for October to 50.7, from 51.2 in September, said brokers.
Even positive sales numbers from leading automakers failed to lift the spirits.
The 30-share barometer finally ended lower by 97.68 points, or 0.37 per cent, at 26,559.15 -- the lowest closing since October 1.
With today's close, the gauge has plunged around 911.66 points in the past six sessions.
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Adding to the gloom, soft Chinese factory and services numbers and US consumer spending data fuelled fears over the global economic outlook, spooking investors.
The market has been on a downward trajectory since last Monday on sustained foreign fund outflows and lacklustre earnings by some blue-chips.
The broader Nifty was no better as it broke below the crucial 8,000-mark to hit a low of 7,995.60 before settling at 8,050.80, down 15 points, or 0.19 per cent.
Among Sensex and Nifty stocks, Bajaj Auto took the heaviest pounding, down 4.85 per cent, after total sales in October declined 8.59 per cent.
Hindalco, Tata Steel, Vedanta Ltd and HDFC Ltd lost too.
Amid all this, Maruti Suzuki, the country's largest carmaker, remained a bright spot as it was up 1.05 per cent after its total sales in October grew 29.1 per cent.
In broader markets, the small-cap index shed 0.20 per cent while mid-cap managed to close 0.08 per cent higher.
Foreign investors continued to dump equities as they net sold shares worth Rs 1,464.89 crore last Friday, as per provisional data.
Overseas, Asian stocks ended down while major European markets were trading higher in their morning session.