My 190 is quite, or was until I cut the Medicine Box out. There is sound deadening padding under and behind the rear seat check and make sure it is still in place. Also there is a thin carpet in the trunk on the back of the gas tank. The trunk could have used a little moreinsulation but you can buy something like dynomat to fix that and make the trunk lid sound a little more solid. Check the door panel plastic as well.

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....