How do you remove rust from a car door hinge?

To remove rust from a car door hinge, start by cleaning the area with soap and water to remove dirt and grease. Next, use sandpaper or a wire brush to scrub away the rust, being careful not to damage the hinge. Afterward, apply a rust remover or a mixture of vinegar and baking soda to further dissolve any remaining rust. Finally, rinse the hinge, dry it thoroughly, and apply a lubricant or rust-inhibiting spray to protect it from future rust.