Paint from the factory is fully cured as it goes through a number of "ovens" to cure it. Paint used to repair parts by a repair shop (as linked above) can take 3 months to cure. Factories use electrostatic application techniques and heat. "Joe's paint booth" is not equipped with those things.
Should you wax a new car right away? In this article The Detailing Syndicate - Salt Lake City, UT goes into the do's of waxing your vehicle...
detailingsyndicate.com
"Up until around the 1980s, inner layers of paint on brand-new cars would not be dry until a few months after the car was actually sold. But, this is true no longer”
How long to wait before waxing my new car
www.autodetaildoctor.com
"There is no reason to wait to wax your new car. Vehicle paint is fully cured when it leaves the factory. It is baked inside the paint booths at the automaker’s factory, so it’s ready to go as soon as it hits the dealership lot. Clearcoat is painted, and the paint needs protection. Always apply some sort of protection to your paint surface. Some local body shops, do not have paint booths that bake the paint once it’s applied, and some do have a “baker” but they do not all use the same process that the factories do. If you have a new car, it is safe to apply some protection immediately, and it’s highly recommended."
Waxing a Brand New Car What all the fuss is about It’s shiny. It’s new. It gleams in the sunlight. Your brand new car. You have done hours of research to find just the right one, and now you have it. It’s yours. How do you keep it looking so nice? What’s all the fuss …
www.waldorfhonda.com
"Back to the question at hand, how soon should you wax your new car? Anyone that tells you that you have to wait 2-3 months to wax a new car isn’t completely wrong, the advice is just old. Twenty plus years ago you did need to wait a few months to wax a brand new car. This is because the car paint needed time to cure (harden by heat) properly before you washed and waxed it or you risked messing up the paint job. Newer paint and spraying advancements have made it so that your new car arrives with that new coat of paint already cured in the factory. So if you bought a brand new car today, you can wash and wax it as soon as you want. In fact, it’s encouraged that you wax your new car as soon as possible to start protecting it from the elements right away."
New cars smell amazing! Of course, you want to protect your newest asset and keep it looking brand new for as long as possible.
inmotiondetail.com
"Anyone that tells you that you have to wait 2-3 months to wax a new car isn’t completely wrong, the advice is just old. Twenty plus years ago you did need to wait a few months to wax a brand new car. This is because the car paint needed time to cure (harden by heat) properly before you washed and waxed it or you risked messing up the paint job. Newer paint and spraying advancements have made it so that your new car arrives with that new coat of paint already cured in the factory. So if you bought a brand new car today, you can wash and wax it as soon as you want. In fact, it’s encouraged that you wax your new car as soon as possible to start protecting it from the elements right away."
Tim