Run your fingernail across the scratch. If your nail glides over it smoothly, it is a surface scratch and polishing will remove it. If your nail catches in the groove, it is a deep scratch and it needs paint work. This one test answers the question in five seconds, and it decides whether you pay a small amount or a large one.
Most car owners in Lahore panic when they see a fresh scratch. Usually there is no need. Many scratches look terrible but sit only in the clear top layer, and they disappear completely with polishing. Others look small but go all the way to the metal, and those need proper attention before rust starts.
This guide shows you how to tell the difference yourself, before you visit any workshop.
Quick Answer
| Question | Answer |
|---|---|
| How do I check? | Fingernail test. Nail glides over = surface. Nail catches = deep. |
| Surface scratch fix | Compound polishing. Same day. No paint needed. |
| Deep scratch fix | Sanding, primer, paint, clear coat, blending. 1–3 days. |
| Which one causes rust? | Only deep scratches that reach bare metal. |
| Can I ignore it? | A surface scratch, yes. A deep one, no — it will spread. |
First, Understand Your Car’s Paint
Your car’s paint is not one layer. It is four, stacked on top of each other. Knowing this makes everything else easy to understand.
- Clear coat — the shiny transparent top layer. It protects the colour. It is thin, about as thick as a sheet of paper.
- Base coat — the actual colour of your car.
- Primer — a grey or white layer that helps the paint stick to the metal.
- Metal (or plastic) — the body panel itself.
A surface scratch stays inside the clear coat. The colour underneath is untouched. Nothing is missing — the light is just scattering off a rough groove, which is why it looks white or dull.
A deep scratch cuts through the clear coat and goes into the colour, the primer, or all the way to the metal. Something is now actually missing. Polishing cannot bring back material that is gone.
5 Ways to Tell If Your Scratch Is Deep or Surface
1. The fingernail test (most reliable) Wash the area first. Then run your fingernail lightly across the scratch, not along it. If your nail slides over without stopping, it is a surface scratch. If it drops into a groove and catches, it is deep.
2. Look at the colour inside the scratch Look closely in good light. If the scratch is white, grey, or silver while your car is another colour, you are seeing primer or metal. That is a deep scratch. If the scratch shows your car’s own colour, it is likely surface only.
3. The water test Pour a little water over the scratch. If the scratch disappears while wet and comes back when dry, it is a surface scratch. Water fills the shallow groove and makes light pass through normally again. A deep scratch stays visible even under water.
4. Check the angle and the light Move around the car. A surface scratch usually shows only at certain angles and vanishes at others. A deep scratch is visible from every angle, in every light.
5. Feel for a sharp edge Press gently with your fingertip. A deep scratch often has a sharp raised lip along its edge where the metal or paint was pushed aside. A surface scratch feels flat.
If two or more tests point to “deep,” treat it as deep. It costs nothing to get it checked. It costs a lot to fix rust later.
Surface Scratch vs Deep Scratch: Full Comparison
| Surface Scratch | Deep Scratch | |
|---|---|---|
| How deep | Clear coat only | Through colour, primer, or to metal |
| Fingernail test | Nail glides over | Nail catches in the groove |
| Colour inside | Same as your car | White, grey, or shiny metal |
| Disappears under water | Yes | No |
| Common causes | Automatic car wash brushes, dry wiping, dust, bushes, light key marks | Kerbs, another car, gate edges, road stones, deliberate keying, minor accidents |
| Rust risk | None | High if metal is exposed |
| Repair method | Compound polishing | Sand, fill if needed, primer, paint, clear coat, blend |
| Time needed | 1–3 hours, same day | 1–3 days (paint must cure properly) |
| Paint match needed | No | Yes |
| Urgency | Fix whenever convenient | Fix soon, especially before or during monsoon |
What Each One Costs to Fix in Lahore
Note: the figures below are typical Lahore market ranges, meant as a guide. Your exact price depends on the panel, the paint colour, and how far the scratch spreads. Call Umer Auto on 0321-4287573 for an exact quote after inspection.
| Type of damage | What is done | Typical cost (PKR) |
|---|---|---|
| Light swirl marks and haze | Machine polishing on affected panels | [Insert range] |
| Surface scratch, one panel | Compound polishing and finishing | [Insert range] |
| Surface scratches, full car | Full-body compound polish and detail | [Insert range] |
| Deep scratch, small area, one panel | Sand, primer, paint, clear coat, blend | [Insert range] |
| Deep scratch across a full panel | Full panel respray | [Insert range] |
| Deep scratch with a dent | Denting work plus repaint | [Insert range] |
| Deep scratch with rust already started | Rust treatment, then primer and paint | [Insert range] |
Why deep scratches cost so much more. A surface scratch needs one process: polishing. A deep scratch needs six — cleaning, sanding, filling, priming, painting, and clear coating — plus colour matching and blending into the panels beside it so the repair does not show. Paint also needs proper curing time, which is why the car stays longer.
Four things that push the price up:
- Panel size. A bonnet or door costs more than a mirror cap or a small bumper corner.
- Paint type. Pearl, metallic, and multi-coat colours are harder to match than plain solid colours.
- Number of panels. If a scratch crosses from the door onto the fender, both need blending.
- Rust. If rust has started, it must be removed completely first. Painting over rust never works — it comes back through.
Should You Try to Fix It Yourself?
For surface scratches: you can try. A polish or scratch remover from a local auto store may reduce light marks. Work on a clean, cool panel, in the shade, using a soft microfiber cloth.
But be careful. Your clear coat is very thin. Rubbing hard, using the wrong compound, or working on a dusty panel removes too much clear coat and leaves a permanent dull patch. That dull patch then needs paint which is the expensive repair you were trying to avoid.
For deep scratches: do not use a touch-up pen as a permanent fix. It fills the groove but leaves a visible blob, and the colour rarely matches. Worse, it seals dirt and moisture inside the scratch. If you need a quick temporary cover before a workshop visit, that is fine just tell the workshop, because they will need to remove it first.
Never do these:
- Do not use toothpaste, baking soda, or household polish. They are abrasive in an uncontrolled way.
- Do not rub in circles with heavy pressure. This creates swirl marks worse than the original scratch.
- Do not polish a dirty panel. Trapped grit acts like sandpaper.
- Do not leave exposed metal open in wet weather.
Why a Deep Scratch Cannot Wait in Lahore
Once a scratch reaches bare metal, the metal is exposed to air and moisture. That is how rust begins. In Lahore this matters more than people think:
- Monsoon season brings weeks of humidity and standing water.
- Winter fog and morning dew leave moisture sitting on panels for hours every day.
- Road dust and construction grit collect inside the open scratch and hold moisture against the metal.
Rust does not stay in one place. It spreads sideways underneath the paint you can still see, which is why a small rust spot often turns into a bubbling patch the size of your hand. At that stage the repair is no longer a scratch repair it becomes metal work.
A deep scratch fixed early is a straightforward paint job. The same scratch six months later can be several times the cost.
Learn more about our rust treatment for cars.
How Umer Auto Fixes Scratches
For surface scratches — compound polishing
- The panel is washed and decontaminated so no grit is left on the surface.
- A cutting compound is machine-applied to level the clear coat around the scratch.
- A finishing polish restores gloss and removes any haze.
- The panel is wiped and protected.
Most surface scratch jobs are completed the same day. See our compound polishing and car detailing services.
For deep scratches — paint repair
- Inspection. We confirm the depth and check for hidden dents or rust.
- Preparation. The area is sanded back to a clean, sound surface.
- Filling. If there is a dent or gouge, filler is applied and shaped.
- Primer. A primer coat is applied and sanded smooth.
- Colour matching. Your car’s paint code is matched, then test-sprayed to confirm.
- Paint and clear coat. Colour is sprayed, followed by clear coat.
- Blending. The new paint is blended into the panels beside it so there is no visible line.
- Polishing and handover. The panel is polished to match the rest of the car.
See our car painting and car denting services.
Where we serve. Umer Auto is based in Lahore and serves customers across DHA / Defence, Johar Town, Gulberg, Bahria Town, Faisal Town, Wapda Town, Valencia, Park View City, and Thokar Niaz Baig. Open Monday to Saturday, 9am to 7pm.
Frequently Asked Questions
How do I know if a car scratch is deep or shallow?
Run your fingernail across the scratch. If your nail glides over smoothly, it is a shallow surface scratch in the clear coat. If your nail catches in the groove, the scratch is deep and has gone past the clear coat into the colour, primer, or metal.
Can a deep scratch be buffed out?
No. Buffing and polishing work by levelling the clear coat around a scratch. A deep scratch has already cut through the clear coat, so there is nothing left to level. Deep scratches need sanding, primer, paint, and clear coat to repair properly.
Will a car scratch cause rust?
Only if it reaches bare metal. Surface scratches in the clear coat never rust because the metal is still fully protected. A deep scratch that exposes metal will begin rusting within weeks in humid weather, and the rust spreads under the surrounding paint.
How much does it cost to fix a scratch on a car in Lahore?
It depends on depth. Surface scratches only need polishing, which is the cheaper repair and usually finished the same day. Deep scratches need sanding, primer, paint, and blending, which costs significantly more. Call Umer Auto on 0321-4287573 for a quote after inspection.
How long does scratch repair take?
Surface scratch polishing usually takes one to three hours and the car goes home the same day. Deep scratch paint repair takes one to three days, because primer, paint, and clear coat each need proper curing time before the next step.
Does the whole panel need repainting for one deep scratch?
Not always. A small deep scratch can often be repaired as a spot repair and blended into the surrounding area. If the scratch runs across most of the panel, a full panel respray gives a better and more even result.
Will the repaired area match my car’s original colour? Yes, when the paint code is matched correctly and the new paint is blended into the neighbouring panels. Blending is the step that prevents a visible line. Older cars with sun-faded paint need extra care, which is why we test-spray before final application.
Get Your Scratch Checked Free
Not sure which type you have? Bring your car to Umer Auto in Lahore. We will inspect the scratch, tell you honestly whether it needs polishing or paint, and give you an exact price before any work starts.
Call 0321-4287573 or request a quote online.
