M&M's scrip ended the day 1.52 per cent lower at Rs 1,243.85 on the BSE. During the day, it slipped 1.97 per cent to Rs 1,238.
At the NSE, it lost 2.04 per cent to settle at Rs 1,239.35.
Mahindra & Mahindra today reported six per cent decline in total sales at 39,930 units in January.
It had sold 42,685 units in the same month last year, the company said in a statement.
M&M's domestic sales declined by eight per cent to 37,045 units last month as against 40,324 units a year earlier.
Meanwhile, in the broader market the BSE benchmark Sensex ended at 29,122.27, down 60.68 points.