Hmm. I know this might be tricky, but can you get a picture of that film? Sounds like an aftermarket thing. Maybe someone put PPF on the windshield??? Did it come that way from the dealer?
There are tons of YouTube videos you can watch online about proper wash and wax techniques.
If you are a novice, the best advice I can give is that a proper cleaning prior to wax is esential.
And for the record - every car is worth waxing. 👍🏻
Never in the hostory of the company has Ford been a "premium" brand. That's Lincolns thing. So I don't really don't understand what your expectations are for the Mustang when you throw that term around. Also, "premium" and "luxury" esentially the same thing. The Mustang has NEVER been in that...
Quality dry filters are worth the investment because they are easy to clean and can last the lifetime of the car. And there is plenty of data online that shows better flow testing if you just google. Plus Motorcraft paper filters don't last too long in my neck of the woods.
All the doom and gloom of EVs and hybrids replacing ICE is very premature. Even if the next gen mustang is a shared platform with those cars, we will still have a V8 version well into the 2030s according to Ford. Stop worrying about the boogie man, and enjoy what you have. The "brand" is just...
That's a odd attempt at an insult considering I daily drive my mustang and it has over 6k miles on it lol. You're either very confused or I must really be living in your head. 🤔