Exports were down 39 per cent at 1,528 units in April against 2,506 units in the same month last year.
Sales of passenger vehicles, including Scorpio, XUV500, Xylo, Bolero and Verito, were down 15 per cent at 19,325 units compared to 22,655 units in the same month last year.
Commercial vehicle sales were up 16 per cent at 15,066 units in April against 12,947 units in the year-ago period, M&M said.
M&M President Automotive Sector Rajan Wadhera said the company expects that the new financial year will bring in positive sentiments for the automotive industry with the key demand drivers in place.
"Factors such as the ongoing infrastructure development initiatives, outlook for a normal monsoon and the expectation of a stable policy environment will fuel growth in the coming days," he added.