Spots that look like rust on paint

[LPA820]

I bought my 2023 Genesis G70 slightly used a couple months ago. I recently noticed little spots on the trunk and rear bumper that look like rust spots. Most of them are roughly the size of a grain of sand, but some are slightly larger. They won’t wipe off and I’ve tried using a clay bar treatment as that was recommended by a friend. It didn’t work.

Does anyone know what these are and how to clean them properly? I find it hard to believe that a car that’s less than a year old is rusting and only on the trunk and rear bumper.

 

[Shakeydeal]

Did you try some polish or rubbing compound?

 

[XamnosiddA]

Those deposits are most likely iron oxide fallout from both your brakes and the environment in general (factories, roads, polution, etc.). You need to use a spray-on iron remover like Carpro IronX or Adam's Iron Remover. You spray it on before you wash/clay the car, let it dwell for about 2 minutes (NEVER in sunlight though), and rinse it off; then do the rest of your car cleaning. The spray causes an exothermic reaction with the metal particles, making the edges rounded that are then more easily flushed away with your hose.

I've used several brands and they all work the same way. The reaction emits a sulfur smell, but goes away when you rinse it. Here's a snippet from the item description.

 

[jfo]

^^
This.
If you live in an area with snowy winters then you may find this will need to be treated with Iron X every spring, particularly if there is lot's of salt and snowplows. The large metal plow blade runners that are grinding off bits of metal combined with salt contribute to this. Iron X is very effective in removing the tiny bits of iron that become embedded in the finish.

 

[LPA820]

Forgot I posted this, but incase anyone sees this post in the future, my solution was similar to what Xamnosidda said. I can't remember the exact brand (might've been IronX, might've been something else suggested to me), but I bought a solution to spray onto the car and did a clay bar treatment after that. It took some elbow grease but it completely removed the spots shown in the pictures.