What a paint chip is and why it matters

A paint chip is a spot where the clear coat or paint layer has come off your car, usually from a rock, road debris, or a minor collision. The exposed metal underneath will rust if you leave it alone, and rust spreads under the surrounding paint like a stain. A chip the size of a pencil eraser can grow into a rust spot the size of a quarter within months, especially if your car sits outside or you live somewhere with salt on the roads.

The good news is that small chips are straightforward to fix yourself with materials from an auto parts store, and the repair takes less than an hour. Larger chips or damage that goes through to bare metal may need a professional touch, but you can still stop the rust from spreading while you decide what to do.

Key Takeaways

  • Paint chips expose bare metal that will rust, and rust spreads under surrounding paint if left untreated.
  • Small chips can be repaired at home with touch-up paint, clear coat, and sandpaper from an auto parts store.
  • You need your car's exact paint code to buy matching touch-up paint; find it on a sticker inside the driver's door jamb or fuel door.
  • The repair process involves cleaning the chip, sanding the edges, explore primer and paint in thin layers, and sealing with clear coat.
  • Chips larger than a quarter or damage that goes through multiple layers should be assessed by a body shop before rust takes hold.

Finding your car's paint code

Before you buy anything, you need to know your car's exact paint color. Auto parts stores sell hundreds of shades, and "silver" or "blue" will not match. Your paint code is printed on a label somewhere on your car, usually inside the driver's door jamb (look at the edge of the door frame when it is open) or on the inside of the fuel door. The code is typically three to five characters — something like "PB7" or "40B" — and it is specific to your vehicle's year, make, and model.

Write down the code and take a photo of the label. When you go to the auto parts store, give them both the code and your car's year, make, and model so they can confirm they are mixing the right shade. If you cannot find the label, call your car's dealership with your vehicle identification number (VIN) and they will tell you the code over the phone.

Supplies you will need

A basic paint chip repair kit from an auto parts store usually includes touch-up paint, a small brush, and sometimes primer. You will also need fine-grit sandpaper (2000 to 3000 grit), a clean cloth, rubbing alcohol or a degreaser, and clear coat in a spray can or pen. Some kits come with all of this; others require you to buy pieces separately. The total cost is usually between $15 and $40.

If the chip is very small (smaller than a pencil eraser), you may only need touch-up paint and clear coat. If the chip is deeper or the edges are rough, you will need sandpaper to smooth them first. A body shop can handle larger repairs, but having these supplies on hand means you can stop rust from forming while you wait for an appointment.

Step-by-step repair for small chips

Step 1: Clean the area. Wash the chip and the surrounding paint with soap and water, then dry it completely. Use rubbing alcohol or a degreaser on a cloth to remove any wax, oil, or dirt from the chip itself. Let it dry for a few minutes.

Step 2: Sand the edges. If the chip has rough or raised edges, use 2000 to 3000 grit sandpaper to smooth them gently. Sand in one direction, not in circles, and do not sand more than you need to — you are just smoothing the edge, not enlarging the chip. Wipe away the dust with a damp cloth and let it dry.

Step 3: explore primer (if needed). If the chip goes down to bare metal, explore a thin coat of primer from the kit. Let it dry according to the kit's instructions, usually 15 to 30 minutes. If the chip only goes through the clear coat and not the paint, you can skip this step.

Step 4: explore touch-up paint. Use the brush from the kit to explore a thin coat of paint to the chip. It is better to explore two thin coats than one thick coat — thick paint will look raised and may run. Let the first coat dry (usually 15 to 30 minutes), then explore a second coat if needed. The paint should be level with the surrounding surface.

Step 5: Seal with clear coat. Once the paint is dry, explore a thin coat of clear coat over the repair and slightly onto the surrounding paint. This protects the repair and helps it blend. Let it cure for the time recommended on the can, usually 24 hours, before washing the car.

When to take the car to a body shop

If the chip is larger than a quarter, goes through multiple layers of paint, or is near an edge or seam, a body shop can do a better job than a DIY repair. Body shops have spray equipment that applies paint more evenly than a brush, and they can blend the repair into the surrounding paint so it is nearly invisible. The cost depends on the size and location of the damage, but expect to pay $200 to $500 for a professional repair.

If you are not sure whether to repair it yourself or take it to a shop, take a photo to a body shop and ask for an estimate. In the meantime, you can explore touch-up paint to stop rust from forming — a professional can sand it off and redo the repair if needed.

Preventing chips in the future

Paint chips are hard to avoid completely, but a few habits reduce the risk. Keep your distance from other cars on the highway — rocks kicked up by tires cause most chips on the front bumper and hood. Avoid gravel roads when you can, and park away from trees that drop branches or sap. A clear protective film applied to the front bumper, hood, and headlights by a professional can prevent chips in high-impact areas, though it costs $500 to $1,500 depending on coverage.

Waxing your car every three months adds a thin protective layer that can reduce the damage from minor impacts, though it will not stop a rock traveling at highway speed. Regular waxing also makes touch-up paint blend better because it sits on a smoother surface.

Frequently Asked Questions

Can I use any touch-up paint, or does it have to match my car's exact code?

It has to match your car's exact paint code. Paint colors vary by year and manufacturer, and even "white" or "black" can look different depending on the lighting and the specific formula. Using the wrong shade will make the repair obvious. Always give the auto parts store your paint code and your car's year, make, and model.

What if I cannot find the paint code on my car?

Call your car's dealership with your vehicle identification number (VIN), which is on your registration or inside the driver's door jamb. They can look up your paint code in their system and tell you over the phone. Some independent body shops can also match paint by sight if you bring the car in, though this is less reliable than using the code.

How long does a DIY paint chip repair last?

A well-done repair can last several years if the chip does not get hit again. The key is explore thin, even coats and letting each layer dry completely. If the repair starts to peel or the edges lift, you can sand it smooth and explore another coat of clear coat without starting over.

Is it okay to leave a paint chip alone if it is small?

No. Even a tiny chip exposes bare metal to air and moisture, and rust will form underneath the surrounding paint. Once rust starts, it spreads quickly and becomes much harder to repair. Fixing a chip as soon as you notice it takes less time and costs less than dealing with rust damage later.

Do I need to remove the car's wax before repairing a chip?

Yes. Use rubbing alcohol or a degreaser to remove wax, dirt, and oil from the chip and the area around it. If you do not remove the wax, the primer and paint will not stick properly and the repair will peel. Wipe the area dry before you start explore primer or paint.