I have a 2007 Cultus, when you close the doors (especially the front ones) the sound and overall feel is very cheap and of low quality. A friend recently bought a '13 Cultus, that car's interior feels totally different than mine's. It has a much better build quality, and the doors are satisfying to close. The panels of my cultus also vibrate and make sound when running on low speeds, while the other '13 cultus feels more "held together"
I understand there's a 6 years and a condition gap between the two. I want to know what I can replace to fix this problem?