I've heard of others with the wind noise. I do not have that. I have a 21 also that I bought new and have about 17,000 miles on it now so we are about the same. I do have a rattle that I cannot figure out from the rear. It is not high pitched, just a vibration rattle. I thought it was the headrests but when I removed them it was still there. Sorry I cannot help and good luck with your new Explorer. Other than a couple of rattles I am very happy with mine and enjoy it everytime I drive it. The 2.3 is a great engine and underrated in my opinion. Its the best in class.