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View attachment 505588
I am also upset with the delivery state of the front windshield. I had two issues with mine. The "stuff" stuck on the windshield seems to be some sort of plastic. Our first 3 hr drive to the mountains was fine on the way up, but driving back into the sun, the crap on the windows was bad. I have had some luck with using Mr. Clean Magic Erasers, and lots of window cleaner and elbow grease.
But then I noticed about a 8" streak on the drivers side that would not clean off. Turns out it was a scratch on the inside. Happy to report that a visit to the Service Center in Carlsbad CA was a great experience. No hassle, they confirmed the defect, set me up with a loaner Model S, and the next day I had a brand new windshield installed. They had per-ordered one just in case they needed to replace it. They took great care of my car, and did not leave any traces of the work on the inside or outside of my car (no nicks or any scuffs).
But guess what, this one also had the "crap" stuck on the inside and outside. Only noticeable while looking into the sun.
Not nearly as bad as my original one, but they are still there. I was able to point them out to service people, but they did not seem to know what to do about it. They came up with all kinds of reasons such as "oh that must be from the micro fiber clothes we use to clean the windshield." I did not buy any of their excuses. Hopefully I was able to convince them that they should bring the issue up as a quality control issue. Perhaps take a few of the next new cars that show up outside and point them into the sun. Then get in and take a good look at the window.
Perhaps everyone should let Tesla know about the state of their windshield. I followed up with an email to the sales and service manages at Carlsbad. Hopefully they will take some action to prevent this issue.