If your garage door panel is dented, replacing it may be necessary to restore functionality, security, and curb appeal. While minor dents can sometimes be repaired, severe damage—such as cracks, warping, or rust—often requires panel replacement to ensure smooth operation and prevent further issues. You can opt for a single-panel replacement if the rest of the door is in good condition, but if the damage is extensive or the door is old, a full replacement may be more cost-effective.