15% Rule: Fix Scratches Before Selling in Canada

Fix only the scratches you can reliably and inexpensively repair, and photograph and disclose the rest. Light clear coat scratches that don’t catch a fingernail are usually DIY fixable in an afternoon, while bare metal or peeled clear coat calls for a body shop. Canadian sellers also need to weigh insurance claim timing and provincial disclosure rules before deciding how to handle any damage.

TL;DR:

• Small, clear coat scratches that do not catch a fingernail can usually be fixed easily with DIY polish or scratch removal kits, saving money and effort.
• Photographs of all scratches and repair receipts are essential for transparent disclosure, as buyers respond more positively to honest reports than to attempted concealment.
• Use a flashlight at an angle to better assess scratch depth and appearance, noting that superficial clear coat scratches are often removable while deeper damage may require professional repair.
• Reserve professional refinishing for large, deep, or peeling clear coat scratches, especially those involving bare metal or delamination, to ensure high-quality results.
• For minor cosmetic damage, repairing small repairs is often cost-effective, whereas larger or uncertain repairs on low-value vehicles usually do not recover their costs before resale.

Table of Contents

• Quick decision checklist: repair, disclose, or sell as-is?
• How to assess scratch depth and visibility
• DIY fixes for light and moderate scratches
• When to choose professional refinishing
• Insurance, reporting and disclosure in Canada
• Cost vs value: realistic resale impact of fixing scratches
• How Kamocars talks sellers through cosmetic repairs
• A discreet selling option if you skip the repair
• Sources
• FAQ

Quick decision checklist: repair, disclose, or sell as-is?

Before you buy a single polishing kit, run through this checklist. It takes ten minutes and saves you from wasting money on a fix that won’t move the needle.

1. Run the fingernail test on each scratch: if your nail glides over it without catching, it’s likely confined to the clear coat and manageable with DIY methods.
2. Check location and visibility: scratches on door edges, hoods, and front bumpers get noticed during a walkaround; ones on lower rocker panels usually don’t.
3. Weigh repair cost against resale bump using a simple rule of thumb, such as the 15% rule Kamocars uses to guide sellers on which small repairs are worth doing.
4. If a cheap, predictable fix will visibly improve the first impression, do it. Skip risky spot-sprays that can leave a mismatched patch worse than the original flaw.
5. Photograph every scratch and keep any repair receipts, whether you fix it or not.

This sequence matters because buyers react more strongly to signs of concealment than to an honest scratch. A clean disclosure with photos builds more trust than a botched touch-up that catches the light wrong in a driveway inspection.

How to assess scratch depth and visibility

Most sellers guess at scratch severity by eye under bright showroom light, which hides more than it reveals. A better method takes two minutes per panel.

• Use a phone LED or a small portable light in the shade, held at a 45 degree angle to the paint, to expose clear coat flaws that daylight washes out.
• Apply the fingernail test: no catch usually means the damage sits in the clear coat; a catch means you’re into the basecoat or deeper.
• Look for paint transfer, whitening, or raised edges along the scratch. These signs usually mean polishing alone won’t fix it.
• Photograph each scratch from a straight angle and an oblique angle, and keep the images for your own records or for buyer disclosure later.

The Farécla G3 Pro Scratch Remover instructions confirm this split: a scratch that doesn’t catch a fingernail can often be removed by hand, while anything that catches can typically only be reduced, not eliminated, without filler and paint.

Pro Tip: Check panels in open shade, not direct sun. Sunlight bounces off the clear coat and hides shallow scratches that a buyer will spot on a cloudy test drive.

DIY fixes for light and moderate scratches

Once you know what you’re dealing with, the fix depends entirely on depth. Rushing this step is the single biggest reason DIY touch-ups look worse than the original scratch.

Start with prep, no matter how minor the scratch looks:

• Wash the car using the two-bucket method to avoid dragging grit across the paint while you work.
• Decontaminate the surface with a clay bar or detailing clay to lift bonded contaminants before polishing.
• Dry the panel fully and mask the surrounding trim and adjacent panels with painter’s tape.

For light, clear coat only scratches, use an abrasive scratch remover such as Farécla G3 Pro or the Meguiar’s Quik Scratch Eraser Kit. Apply the product in a crosshatch motion for an appropriate amount of time until the scratch is improved, check your progress under angled light, and repeat if the scratch is still visible. Meguiar’s kit pairs ScratchX with a 4 inch drill pad for overlapping passes, and both manufacturers recommend sealing the repaired area with wax once you’re done.

For moderate scratches that have broken through the clear coat, a kit like the 3M / Bondo Scratch and Rock Chip Repair Kit walks you through the full sequence: clean the area, apply filler or primer to level the scratch, lay down several thin base coats, wait the manufacturer’s dry time between coats, then apply clear coat layers and let them cure properly before wet sanding and polishing to blend the repair into the surrounding paint.

A few practical notes on tools and technique:

• A dual action polisher gives more consistent results than hand application, but a drill-mounted pad from a kit like Meguiar’s works fine for small spot repairs.
• Work through grit progression carefully if you wet sand: jumping straight to a fine grit won’t level a scratch, and starting too coarse risks leaving new marks.
• Stop and call a body shop if you hit bare metal or find the clear coat peeling at the edges. Neither responds to polishing, and pushing forward usually makes the repair more expensive later.

Pro Tip: Test any scratch remover on a hidden spot, like inside the trunk lid or behind the gas cap, before working on a visible panel. Clear coat thickness varies by manufacturer and even by paint batch.

Manage your expectations by scratch type. Light clear coat defects treated this way are usually gone for good. Moderate scratches treated with a filler and paint kit will look noticeably better, but a DIY repair rarely disappears completely the way a professional respray does.

When to choose professional refinishing

Some scratches are outside DIY territory no matter how careful you are, and knowing the difference saves you from a repair that ends up costing more than it recovers.

A body shop doing this correctly follows a defined sequence: sand and prep the damaged area, apply primer, lay down base coat, blend the color into the adjacent panels so there’s no visible edge, add clear coat in multiple layers, cure it in a paint booth, then wet sand and polish the final result.

Watch for these red flags when a repair has already been done or is being quoted:

• No blending into neighboring panels, which leaves a visible line where old and new paint meet.
• Mismatched sheen between the repaired section and the rest of the panel.
• Any repair with no paperwork, no estimate, and no explanation of what was done.

Vetting a shop before you commit is worth the extra phone call. Ask how they match color, whether they can show before and after photos of similar work, and whether they’ll provide a written estimate with a warranty. According to paint correction guidance for vehicles before protective film work, proper blending and machine polishing are standard steps professionals use to make a repair disappear, not shortcuts.

Reach for a professional when you’re dealing with bare metal exposure, a scratch spanning a large panel, any sign of clear coat delamination, or a repair where anything less than an invisible result will hurt your asking price.

Insurance, reporting and disclosure in Canada

Cosmetic damage triggers two separate questions for Canadian sellers: should you claim it, and what do you have to tell a buyer?

On the insurance side, Canada notes that claim windows are set by your individual policy, not a single national rule, and commonly range from 90 days to 12 months. If someone scratches your parked car, photograph the damage immediately, look for witnesses or nearby security footage, and check your own policy’s deadline before assuming a claim makes sense.

On disclosure, requirements vary by province, but OMVIC’s mandatory disclosure guidance for Ontario is a useful benchmark: sellers and dealers must disclose material facts about vehicle damage in writing, and doing so protects both parties if a dispute comes up later.

A few practical points worth keeping in mind:

• For minor cosmetic scratches, the deductible and possible premium increase often outweigh what you’d recover from a claim, so photographing and documenting the damage yourself is usually the smarter move.
• If you do have a scratch professionally repaired, keep the receipt and a written description for your listing and your bill of sale.
• Broad, written disclosure builds buyer trust and reduces the chance of a dispute after the sale closes.

Cost vs value: realistic resale impact of fixing scratches

Not every scratch deserves your money. The judgment call comes down to whether the repair cost is small relative to the value it protects.

A practical rule, echoed in Kamocars’ guidance on fixing low cost items before selling, is to fix the inexpensive, high-visibility defects and skip large-scale repaints unless the vehicle’s overall value justifies it. A full panel respray on an older, lower-value vehicle rarely returns what it costs, since buyers shopping in that price range aren’t paying a premium for flawless paint.

• Fix small, predictable items: a light clear coat scratch on a door edge or bumper corner.
• Skip large repaints on older or lower-value vehicles where the repair cost won’t be recovered at sale.
• Factor in non-monetary benefits too: a car that presents well tends to sell faster and draws more confident offers.
• Document any repaired area with before and after photos plus receipts, so a buyer never has reason to question what was done.

How Kamocars talks sellers through cosmetic repairs

When sellers ask whether a scratch is worth fixing, the answer usually comes down to predictability. A cheap, reliable fix that improves first impressions is worth doing. A repair with an uncertain outcome, like a spot-spray on a curved panel, often isn’t, and buyers may prefer buying the car as-is with a fair, condition-based offer rather than sellers risking money on a gamble.

The workflow we recommend is simple: assess the scratch using the fingernail test, decide if it’s a same-day DIY job, and if it isn’t, request an instant appraisal instead of sinking money into a repair that may not pay for itself. That appraisal reflects the car’s actual condition, scratches included, so there’s no guesswork about what a fix would or wouldn’t have added.

— Omar

A discreet selling option if you skip the repair

Not every scratch is worth your weekend or your wallet, and that’s fine. If you’ve decided the cost of repair outweighs the benefit, Kamocars gives Alberta sellers a way to sell the car exactly as it sits, without haggling over every mark on the bumper.

We provide instant online appraisals based on current market data, arrange same-day pickup anywhere in Alberta, and handle payment and paperwork within 24 hours of pickup. If a scratch is only marginally worth fixing, you can skip the repair entirely and still walk away with a fair, documented offer instead of absorbing repair costs and the time it takes to sell privately.

• Get an instant offer through Sell My Car without cleaning up every cosmetic flaw first.
• See the full process, from appraisal to payment, on the How It Works page.

If you’d rather skip the polish and the paperwork altogether, start with an instant appraisal and let us handle the rest.

Sources

• How to Remove Car Scratches Using G3 Pro Scratch Remover | Farécla
• Bondo® Scratch and Rock Chip Repair Kit Clamshell, 31590, 6 kits per case | 3M United States
• Canada
• OMVIC - Mandatory disclosures guidance

FAQ

Is it worth fixing scratches on a car before selling?

It’s worth fixing scratches that are cheap and predictable to repair, especially ones in visible spots like door edges or bumpers, since a clean first impression helps a sale move faster. Large or uncertain repairs, like a full respray on an older vehicle, often cost more than they return, so documenting and disclosing those instead is usually the smarter path.

What to do if someone scratches your car while parked in Canada?

Photograph the damage right away and look for witnesses or nearby security footage that might identify who caused it. Then check your own policy before filing a claim, since the FCAC notes that claim windows vary by policy, commonly between 90 days and 12 months.

Can I trade in my car if it has scratches?

Yes, dealers routinely accept trade-ins with cosmetic scratches, but the damage will typically be reflected in a lower trade-in value. Disclosing the damage upfront and providing photos or repair receipts helps avoid a lower on-the-spot adjustment during inspection.

What do car dealers use to hide scratches?

Dealers sometimes use temporary cosmetic products like glaze, wax, or a quick machine polish to improve a car’s appearance for a walkaround, rather than performing an actual repair. These treatments are cosmetic only and can wear off or become visible again after a wash or a few weeks of driving.

How much does it cost to fix a scratch before selling in Canada?

Costs vary widely depending on whether the scratch is a light clear coat mark you can polish out yourself with a kit like Farécla G3 Pro, or a deeper scratch requiring professional filling, priming, and repainting. There’s no single published Canadian price for scratch repair, so getting a written estimate from a local body shop is the most reliable way to compare your options.

Recommended

• Selling a 2018 or Newer Car in Canada
• Sell Your Electric Car in Canada: Beat the $5,000 EVAP Ceiling
• Sell Your Car Sight Unseen in Canada: Get Paid Within 24 Hours