Quick answer:
Car magnets only stick to steel/metal panels that are magnetic. They typically do not stick to aluminum, fiberglass, plastic, or glass. Some wrapped vehicles can work if the panel underneath is steel, but extra care is needed.
Not sure if your vehicle is magnetic? Test with a small fridge magnet first.
What surfaces do car magnets stick to?
Car magnets stick to magnetic steel. They need a ferrous (magnetic) surface to hold securely.
- Works: Steel body panels (most traditional vehicle doors and flat metal surfaces)
- Usually does NOT work: Aluminum, fiberglass, plastic, glass
Will a car magnet stick to aluminum?
No—car magnets generally do not stick to aluminum panels. Many newer vehicles may have aluminum body parts, which are not magnetic.
Will a car magnet stick to fiberglass or plastic?
No—fiberglass and plastic are not magnetic, so magnets won’t hold.
Will a car magnet stick to a wrapped vehicle?
Sometimes. A wrap itself is not magnetic, but if the panel underneath is steel, the magnet may still hold. For wrapped vehicles:
- Make sure the surface is clean and dry
- Do not slide the magnet around (lift and place instead)
- Test the hold strength before long drives
How to test your vehicle in 10 seconds
The fastest test is to use a small refrigerator magnet:
- Pick the exact spot you want to place the car magnet
- Try sticking a small fridge magnet to that spot
- If it sticks firmly, your car magnet should work there
- If it doesn’t stick, a car magnet won’t hold on that area
Common vehicle areas where magnets won’t stick
- Plastic bumpers
- Fiberglass body panels
- Aluminum panels
- Curved areas with low contact (weak hold)
- Panels with heavy body contouring or trim pieces
Best placement tips (for strongest hold)
- Choose a flat steel panel (the flatter, the better)
- Clean the surface and the back of the magnet before applying
- Avoid placing over deep curves, seams, or trim edges
- Lift and place to position — don’t slide
FAQs
Why does my magnet stick to one part of the car but not another?
Many vehicles use different materials on different panels. Some doors may be steel while other sections may be aluminum or plastic.
Can magnets stick to stainless steel?
Some stainless steel is magnetic and some is not. The easiest way to confirm is the quick test with a small fridge magnet.
What if my vehicle isn’t magnetic?
If the panel isn’t magnetic, a car magnet won’t hold there. Contact us and we can help you choose a better solution for your use case.