The 3 Types of Car Scratches (and Which Ones Can Be Fixed)
All scratches are not the same repair — the layer they reach decides everything: the fix, the cost, the urgency. Your car's paint is a stack of clear coat over colour over primer over panel, and one 10-second test tells you how deep yours goes.
By Mark Wigoder · Mobile paint repair, Sydney’s North Shore, Northern Beaches & Hills District since 1998 · Updated 17 August 2026
Type 1: clear-coat scratches (the shallow ones)
The clear coat is the glossy sacrificial layer on top. Bush scrapes, wash swirls, light trolley kisses often live entirely here — you see a white-ish mark, but the colour underneath is untouched. The fingernail test: your nail glides across without catching.
Repair: machine polishing (cut and polish) removes a micro-layer of clear coat and the scratch with it. No paint, no colour matching. Some very light marks even improve with a decent hand polish. This is the cheapest fix there is — and a repairer who quotes you a respray for a polishable mark is the wrong repairer.
Type 2: base-coat scratches (through the colour)
Once the scratch cuts into the colour layer, polishing can't help — polish removes clear coat, it doesn't rebuild colour. Your nail catches in the groove, and the scratch shows as a consistent line that doesn't fade when wet.
Repair: refinishing. The area is prepped, colour-matched from your factory paint code, sprayed and blended outward so the repair is invisible under sunlight. This is the standard mobile repair — a few hours on a driveway for a single panel.
Type 3: primer or metal scratches (the urgent ones)
Grey or silver visible at the bottom of the scratch means it's through to primer or bare panel. This is the one type where waiting costs you: exposed primer absorbs moisture and bare metal oxidises, creeping under the surrounding paint. What starts as a paint repair becomes a rust repair — a different, bigger job.
Repair: as Type 2 plus corrosion treatment and priming first. Done early, it's barely dearer than a colour-coat repair. Done a year later with rust bubbling at the edges, it isn't.
Special cases worth knowing
- Key scratches: usually Type 2-3 and long, crossing multiple panels — repairable, but the length drives blending work. Worth photographing end-to-end for the quote.
- Stone chips: tiny Type 3s on the bonnet's leading edge. Individually trivial, collectively they invite rust; a batch repair session handles dozens at once.
- Paint transfer: another car's paint sitting ON yours. Often polishes off completely, revealing anything from nothing to a Type 2 underneath.
- Scratches on plastic trim and textured surfaces: different material, different rules — unpainted textured plastic can't be polished or sprayed like paint.
Questions Sydney drivers ask
How do I tell how deep a car scratch is?
Fingernail test: drag a nail across it. Glides over → clear coat (polishable). Catches → through the colour (needs refinishing). See grey or silver at the bottom → primer/metal (fix soon, before rust).
Can deep scratches be fixed?
Yes — primer-deep and metal-deep scratches are repaired with corrosion treatment, priming, colour-matching and blending. The key is doing it before rust establishes under the paint edge.
Will polishing remove my scratch?
Only if it's a clear-coat scratch (nail doesn't catch). Polishing removes a micro-layer of clear coat; it cannot rebuild colour in a scratch that's cut through.
What does a scratch that needs respraying look like?
A defined groove your nail catches in, showing a different colour (or grey/silver) at the bottom, still visible when the panel is wet.
Are white marks on my bumper a scratch?
Often it's paint transfer or scuffed clear coat — both the cheap end of repair. A close-up photo distinguishes transfer from a scuff through the paint.
Do stone chips need fixing?
On the bonnet edge they're micro-exposures of primer/metal — no urgency individually, but they accumulate and can rust. Batch-repairing them periodically keeps a highway-driven car ahead of it.
Can a long key scratch be fixed by a mobile repairer?
Usually yes — it's blending work across the affected panels. Vehicle-length scratches across many panels are the upper end of mobile scope; photos give you a straight answer.
Which scratch types does Scratch 'n' Match repair?
All three paint types — polishing for clear-coat marks, colour-matched refinishing for base-coat and primer-deep scratches — across Sydney's North Shore, Northern Beaches and Hills District.
More guides
- Car Scratch Repair Cost in Sydney: What Actually Drives the Price
- Is It Worth Fixing a Scratch on Your Car? An Honest Answer
- Mobile Scratch Repair vs Panel Shop: Which Do You Actually Need?
Ready for a number instead of theory? Send Mark a photo for a free quote or read about car scratch repair across Sydney.
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0412 555 687