You will likely get this in lower range or cheap Japanese cars, though you won't be seeing this in more premium continental cars. Surprising that they used paper boards rather than proper soundproofing sheets which won't cost much anyway. Might as well they don't put anything in the roof if they thought of using paper boards, but then they don't expect owners to open up the roof to have a peek.

Certainly doesn't look too good or "professional". More to a cutting-cost exercise that they have to resort to using paper board as a soundproofing medium? Don't think the difference will be too significant anyway when compared to bare (without anything in the roof).

Really? Have you seen it? Perhaps the CKD version here has skimped on some of the fine parts such as the soundproofing material.

The Volkswagen is not a really premium brand to begin with when compared to Mercedes and BMW.

To be frank, if car manufacturers chose to use cardboards as soundproofing material, they might as well don't put anything and just leave the roof or other parts of the car empty as it is. It's rather hilarious to see cardboards used as soundproofing when the raw material of the soundproofing isn't too costly. Maybe around RM100 thereabouts.

You are not getting the point which is comprehensible judging from your previous silly posts. Anything works. Even if you use some old clothes or newspapers, you stuck those things in the roof of the car they will work. It's only the magnitude of difference will be rather insignificant.

In economics sense, an additional RM90 may be "a lot" for the car manufacturer, but if they cannot spend that additional RM90, then might as well not spend RM5-10 on a piece of cardboard that won't bring any noticeable difference to the roof, if any.

What is a headliner? Although the Passat (or Jetta) has cardbox pieces on the roof, it is not only the carboard isn't it, but some soundproofing material stuck on the piece of cardboard. Just like the stock soundproofing of the BMW as shown in the photos. The cardboard may act as a support for the insulation sheets in the soundproofing of the car. If just the cardboard alone, the effects will be almost negligible.

May I ask what soundproofing material have you used for the roof of your Passat in place of the stock soundproofing of the car? Is there any tangible improvement in the soundproofing after you have done it?

This post has been edited by Volkswagen2: Nov 19 2015, 02:10 PM