CREATE TABLE table_63376 ("Model" TEXT, "Years" TEXT, "Engine code" TEXT, "Power" TEXT, "Torque" TEXT)

What is the engine code for the Xdrive25i?
SELECT "Engine code" FROM table_63376 WHERE "Model" = 'xdrive25i'
SELECT "Engine code" FROM "table_63376" WHERE "Model" = 'xdrive25i'