Model 3’s are not built to order. They are built in batches by trim and color and then orders are fulfilled based on cars coming off the assembly line. S and X cars are still built to order.
When I arrived to take delivery of my LR RWD last year the car they presented me had some panel gap and paint issues so I passed on it. It took two weeks for the next one to arrive, but it was flawless.
A family member of mine ordered a white SR later in the year. There were paint issues with it so we rejected it. It took three weeks for another one to arrive. That one was perfect and has also been flawless ever since.
And our first Model 3 was flawless on the first try. So while it does take patience, it is very possible to wait for a car without issues to become available. And especially now, with so many cars in inventory, it should not be a problem at all.
To date, all three cars have been rattle free, wind noise free, and have needed zero trips to the service center for any maintenance. Aside from a tire rotation they have not needed any attention at all. My old Lexus and Toyota cars would have been in the shop at least two, maybe three times by now for oil and filter changes, with a 15,000 miles inspection coming due shortly. And I won’t even try to count the number of times I would have had to drive to a gas station to fill up instead of just plugging in at home.