The company had sold a total of 16,521 units in July 2012, M&M said in a statement.
Domestic tractor sales were up 15% at 17,771 units as against 15,495 units in the same month last year.
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Exports were, however, down by 32% to 698 units as against 1,026 units in July last year.
Commenting on the monthly performance, Mahindra & Mahindra Ltd Chief Executive, Tractor and Farm Mechanisation Rajesh Jejurikar said the second quarter has begun well and the monsoon this year has been normal, which augurs well for the farm sector.
"A revival in agri-production will provide greater impetus to the economy amidst the overall slowdown," he added.