The Supreme Court's order restricting OEMs from selling BS-III vehicles has taken a toll on commercial vehicle sales in the country during the month of April, as all OEMs have reported a significant drop. Tata Motors' domestic commercial vehicles sales in April 2017 stood at 16,017 units, lower by 36 per cent over April 2016. "This is an unusual decline, under exceptional circumstances," said the company. Commercial vehicles were affected by the Supreme Court judgment announced on March 29, with the ban on BS-III vehicles, leading to the need for a higher quantity of BS-IV stock for April sales. "The higher demand at short notice was not matched by production, especially in the MHCV segments. Moreover, after the strong pre-buying of BS-III vehicles in March, and the price increase of BS-IV vehicles (especially in MHCVs and buses, at 8-10 per cent), demand for BS-IV vehicles was also weak," said the company. Ashok Leyland Ltd has reported a 30 per cent fall in its overall sales in April, the steepest in seven months. The Hinduja Group's flagship company and country's second-largest commercial vehicle manufacturer sold 7,083 units in April 2017 as against 10,182 units, a year ago. Analysts had estimated Ashok Leyland would sell 7,500 -7,700 units in March.