CREATE TABLE table_74901 ("Round" TEXT, "Circuit" TEXT, "Date" TEXT, "Winning driver" TEXT, "Winning team" TEXT)

What Round was the Winning Team Engstler Motorsport Maurer Motorsport?
SELECT "Round" FROM table_74901 WHERE "Winning team" = 'engstler motorsport maurer motorsport'
SELECT "Round" FROM "table_74901" WHERE "Winning team" = 'engstler motorsport maurer motorsport'