The things that bothered me the most in my Tesla model 3 is the road noise and the sound of the door as it closes. After reading on various forums, some have mentioned about adding seals to the doors. Here's my how to video to make your model 3 not only quieter but also have a deep sound when you close its doors.
Link to 4M 160‘’P-Shape Rubber Weather Seal Hollow Universal Car Door Strip Weatherstrip
https://www.ebay.com/itm/4M-160-P-Sha...

z seals

https://www.ebay.com/itm/4M-Z-Shape-C...