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Deep Car Scratches: When to Polish and When to Repaint

Published on October 3rd, 2025

Keeping your car in perfect condition is every driver’s goal. However, small accidents and natural wear and tear often result in scratches. Some scratches are superficial and easy to solve. Others, however, are deeper and demand special attention. So, the big question is: when is polishing enough, and when is repainting necessary?

In this guide, you will learn how to identify the depth of a scratch, the risks of choosing the wrong solution, and the best care practices to maintain your car’s paint in excellent condition.

How to Identify the Depth of a Scratch?

Before deciding between polishing or repainting, you must assess the depth of the scratch. Car paint consists of three main layers:

  • Clear coat: protective layer responsible for shine.
  • Paint layer: gives the car its color.
  • Primer (base coat): ensures adhesion to the metal sheet.

Based on these layers, scratches can be classified into:

  • Superficial scratches: affect only the clear coat and are easy to correct.
  • Medium scratches: reach the paint layer beneath the clear coat.
  • Deep scratches: extend to the primer or even expose the bare metal, demanding more care.

When Does Polishing Solve the Problem?

Polishing is ideal for superficial scratches. The light abrasion of the process eliminates minor imperfections in the clear coat, restoring shine and uniformity.

Polishing is usually the right choice when:

  • The scratch does not catch your fingernail when you run it lightly across.
  • The damage affects only the clear coat.
  • The car’s color tone remains intact.

Besides restoring appearance, polishing adds protection back to the paint and helps preserve the car’s value.

When is Repainting the Only Solution?

If the scratch is too deep, polishing will not be enough. Repainting becomes necessary when:

  • The scratch exposes the primer or even the metal.
  • There are signs of oxidation or rust.
  • The surrounding paint has lost adhesion.

Repainting not only restores the car’s finish but also prevents corrosion and ensures long-term protection. Although it is more expensive, repainting is the correct solution to completely repair the damage.

The Risks of Ignoring Deep Scratches

Leaving deep scratches untreated can cause severe problems. Over time, the exposed metal accelerates the appearance of rust. Additionally, the damaged area compromises the vehicle’s aesthetics and reduces its resale value.

Taking quick action is the best way to avoid higher repair costs in the future.

How to Prevent New Scratches?

In addition to repairing existing damage, you can also prevent new scratches with simple precautions:

  • Park in safe locations: reduces the risk of minor bumps and unwanted contact.
  • Wash your car correctly: avoid rough sponges and improper products.
  • Apply waxes or protective coatings: create an extra layer of defense. Great options include Blend Vonixx or V-Paint Vonixx.
  • Use high-quality car covers: especially if your car stays outdoors for long periods.

Conclusion

The decision between polishing and repainting depends on the scratch’s depth. While superficial scratches can be easily fixed with polishing, deep scratches require repainting to fully restore protection and beauty.

By taking the right approach and preventive measures, you extend the life of your car’s paintwork and maintain its value for much longer.

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