Bajaj Auto today reported four per cent decline in total sales in June at 3,16,969 units against 3,31,317 in the same month of 2015. Motorcycle sales during the month fell 5 per cent to 2,73,298 units from 2,87,582 in June last year, the company said in a BSE filing. Bajaj Auto's commercial vehicles sales during the month remained flat at 43,671 units compared with 43,735 in the year-ago period. Exports in June this year were at 1,23,252 units against 1,56,074 a year earlier, down 21 per cent. The company's shares were trading 0.41 per cent down at Rs 2,657.90 on BSE.