They are also using lots of automation. This means there are lots of problems at first. With automation, once you solve a problem, it is solved forever.
How you could compare Tesla rework with other companies rework, where the threshold that determines if a car needs reworking is decided by the executives of the same companies?
I could make rework zero just selling broken cars. I bought a European car with a problem in one valve of the engine when it was brand new. I told the dealers about the strange sound, they told me it was normal. It was not and gave me lots of headaches later.