The company had sold 51,708 units in the same month last year, HMIL said in a statement.
In the domestic market, Hyundai sold 39,525 units last month compared with 35,003 units in March 2014, up 12.9 per cent.
However, the company's exports declined by 38.9 per cent to 10,215 units as against 16,705 units in the same period last year.
HMIL Senior Vice-President (Sales and Marketing) Rakesh Srivastava said: "The 2015 outlook seems challenging as there is low traction with weak delivery on macro-economic parameters and low consumer sentiments.