The BSE's Auto Index is down 3.03% or 322 points - the worst among all sectoral indices.
Conglomerate Mahindra & Mahindra (M&M) took the largest beating as the counter lost a little over Rs 46 or 5.5% on the stock exchanges. It was trading at Rs 798.8.
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It was followed by India's third largest two-wheelers maker Bajaj Auto, which is trading 4% down. Bajaj, which was reeling under workers' strike till last week, could see its shares surge as reaction to strike end. But the momentum failed to sustain and the counter lost well over Rs 75 on Monday morning trade to Rs 1,774.85.
Hero MotoCorp and Tata Motors are among the other top Auto makers which took a severe beating on a day when benchmark indices continued their steep decline for the second trading session in a row.