SML Mahindra's shares surged to a 5% upper circuit, reaching ₹4,174.25 on the BSE, following the release of its December auto sales data. The company reported a 67% year-on-year increase in sales, with a total of 1,044 units sold, comprising 462 cargo and 582 passenger vehicles. For the April-December period, sales rose 18% year-on-year. The company's board will meet on January 16, 2025, to approve third-quarter financial results.