The company said its domestic sales rose 16.4% during the month to 90,560 units as against 77,821 units in May 2013.
Sales of mini segment cars, including M800, Alto, A-Star and WagonR, declined by 7.5% to 29,068 units as compared to 31,427 units in the year-ago month, MSI said in a statement.
The company said sales of the compact segment comprising Swift, Estilo and Ritz rose 53.9% to 26,394 units in May this year as against 17,147 units last year.
MSI said sales of its popular compact sedan Dzire rose 9.8% during the month under review to 18,953 units as against 17,265 units in May 2013.
The company's mid-sized sedan SX4 registered a drop of 75.9% to 121 units as against 503 units in the same month last year. There was no sale of premium sedan Kizashi during the month.
Sales of utility vehicles, including Gypsy, Grand Vitara and Ertiga, rose 22% to 5,253 units in May this year from 4,307 units in the corresponding month last year.
Sales of vans -- Omni and Eeco -- increased 50.2% to 10,771 units in May this year as compared to 7,172 units in the same period of the previous year.
Exports during the month rose 51.2% to 10,365 units as compared to 6,856 units in May last year, the statement added.