The stock plunged 5.44 percent to settle at Rs 1,218.90 on BSE. During the day, it dipped 6 percent to Rs 1,210.80.

At NSE, shares of the company tumbled 5.5 percent to Rs

The stock was the biggest loser on Sensex and Nifty. Shares of Tata Motors fell 1.66 percent to Rs 373 intra-day, but later recovered the lost ground and ended at Rs 380.60, up 0.34 percent.

Maruti Suzuki closed flat at Rs 4,618.95, down 0.04 percent after earlier falling 0.38 percent to Rs 4,603.

The Supreme Court yesterday banned registration of diesel-run SUVs and cars having engine capacity beyond 2000 cc in Delhi and National Capital Region till March 31, 2016 as it unveiled a slew of measures to curb the alarming rise in pollution levels in the city.

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