Lots of missing paint on vehicles

Been a problem for years. The paint on my jeep comes off in sheets when it's not coming off the hood in small pieces

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Like the Chevy trucks I'm seeing missing paint on the hood. No rust, so it must be aluminum. Are most vehicles all aluminum nowadays or just certain panels?
New vehicles, or older ones? Peeling paint was a big problem in the late-80s and into the 90s, as new EPA-friendly paint formulas came into use. All manufacturers. Dark blue, silver and white were especially bad.
 
New vehicles, or older ones? Peeling paint was a big problem in the late-80s and into the 90s, as new EPA-friendly paint formulas came into use. All manufacturers. Dark blue, silver and white were especially bad.
Yeah that save the ozone or shave the whales paint was no good.
 
My 87 F150 has had a lifetime career of the paint falling off. There was a recall way back I think 1989 or 1990 but the dealer only painted the affected panels. The areas they painted are the only areas not flaking off. I believe sedans back then received more attention during assembly than the trucks did.

I thought I seen some paint come off by slamming the door too hard.
 
The zinc or whatever coating is probably still on there, just paint no longer adhering. That's different than clearcoat failing, which is what Honda was (in)famous for, and others not far behind--my Camry looked like the clearcoat had melted off every horizontal surface! but the paint layer was still present.
 
My 1993 chevy Silverado was repainted under the factory warranty

You could go to the car wash and literally blow the paint off in places it had already started to peel back

Savanah and express vans still do it especially summit white
 
Cheap painting process. You hardly see paint issues on German makes regardless of brand.

White paint is notoriously difficult because of the required base coat thickness. Some automakers have figured it out but it's more expensive.
 
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more like galvanised, which can also reduce paint sticking properly. Aluminum use is rare and if they use it they advertise it.
Or galvalume maybe? It does look like galvanized steel though. Never really took a good up close look at.one.
 
I blame cost cutting. Poor quality paint and most likely also improper application to cut costs.
Now the clear coat coming off is a different story, that's been happening for a lot longer.
 
Like the Chevy trucks I'm seeing missing paint on the hood. No rust, so it must be aluminum. Are most vehicles all aluminum nowadays or just certain panels?
The hood is SMC - Sheet Molding Compound. It is a mixture of resin and long glass fibers. Charges are placed in the mold, and the heated mold is clamped. The edges are trimmed after molding.

The adhesion failures can occur from mold release agents, or (more commonly) poor adhesion of the primer to the hood. The hood is exposed to high velocity air and road debris, making it a tough area for paint durability.

We had a 2005 Express as a company vehicle. It was the single most reliable vehicle we’ve ever owned, requiring nothing but lubricants, brakes and tires in 165,000 miles, tens of thousands of miles towing, and 11 years. We had the hood repainted by a local body shop, who was very familiar with the problem.
 
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