CREATE TABLE table_12884 ("Engine" TEXT, "Cyl." TEXT, "Power" TEXT, "Torque" TEXT, "Engine code" TEXT, "0\\u2013100km/h  ( sec. ) " TEXT)

Which engine has a code of m113.980?
SELECT "Engine" FROM table_12884 WHERE "Engine code" = 'm113.980'
SELECT "Engine" FROM "table_12884" WHERE "Engine code" = 'm113.980'