Overhauled is a term that refers to renovating, repairing, or renovating something completely. Antonyms to the word "overhauled" include "ignored," "neglected," "abandoned," and "neglected." Other antonyms include "left alone," "let be," "uncared for," and "unmaintained." These terms all suggest that something has not been given adequate attention, care or maintenance. Unlike overhauled, they suggest that no effort has been made to restore the object or to improve its condition. So, while "overhauled" suggests a hands-on approach, these antonyms indicate a lack of care and attention leaving the object in a state of disrepair.