YOU SAID:

my car bumper need's to come off

INTO JAPANESE

私の車のバンパーは外れる必要があります

BACK INTO ENGLISH

The bumper of my car needs to come off

INTO JAPANESE

車のバンパーを外す必要があります

BACK INTO ENGLISH

You need to remove the car bumper

INTO JAPANESE

車のバンパーを取り外す必要があります

BACK INTO ENGLISH

You need to remove the car bumper