The company, a joint venture between Volvo Group and Eicher Motors, had sold 5,771 units in the same month last year, VE Commercial Vehicles (VECV) said in a statement.
Eicher branded trucks and buses recorded total sales of 4,539 units last month as compared to 5,710 units in May 2016, down 20.5 per cent.
In the domestic market, Eicher brand posted sales of 3,953 units as against 4,705 units in May last year, a decline of 16 per cent, the company said.
Volvo trucks recorded sales of 34 units in May 2017 as compared to 61 units in the same month last year, a decline of 44.3 per cent, VECV said.