The term 'AUTO FEATURE' can be broken down into four separate crossword solutions: ALARM (5 letters), GRILLWORK (9 letters), AMFMRADIO (9 letters), and AMFMSTEREO (10 letters). An ALARM is a security device that can be set to sound when triggered, usually as a warning or deterrent. Grillwork is a type of decorative metalwork, often used on the exterior of a vehicle. An AMFMRADIO is a radio receiver that can pick up both AM and FM signals. An AMFMSTEREO is a stereo receiver that can pick up both AM and FM signals. All of these features are commonly found in modern automobiles.