New Window Felt. Acoustic Glass No Longer Standard
Thread Starter
Senior Member
Joined: Apr 2015
Posts: 399
Likes: 24
2017 C43 Sedan
I guess this is what MB was doing.
Old felt, no acoustic glass. - wind noise issue, door/windows rattle issues.
Then, old felt, with acoustic glass. - door/windows rattle issues.
Then, new felt, no acoustic glass. - thought wind noise issue fixed, but not...
Latest, maybe new felt, with acoustic glass. - decided to get those acoustic glass back in as new felt along with other "fixes" didn't actually fix the wind noise issue. Or maybe acoustic glass was just out of stock at one point.
There's not so much consistence, and it's just my speculation.
Old felt, no acoustic glass. - wind noise issue, door/windows rattle issues.
Then, old felt, with acoustic glass. - door/windows rattle issues.
Then, new felt, no acoustic glass. - thought wind noise issue fixed, but not...
Latest, maybe new felt, with acoustic glass. - decided to get those acoustic glass back in as new felt along with other "fixes" didn't actually fix the wind noise issue. Or maybe acoustic glass was just out of stock at one point.
There's not so much consistence, and it's just my speculation.
Member
Joined: Dec 2014
Posts: 109
Likes: 6
2015 c300
Did you you have to ask for the felt upgrade or did they do it as part of the TSB? I called my SA and he only saw the order for glass and did not mention anything about the seals. Do you think I should call to clarify or just see what happens. I don't want to seem like a pain in the ***. I'm running out of dealerships in my area as they all lack customer service (with the exception of these guys so far).
thanks Stan
MBWorld Fanatic!
Joined: Sep 2014
Posts: 1,822
Likes: 33
From: Whitefield, NH
2015 C300 Sport: Palladium, Premium, Multimedia, Leather, BLIS
How does it sound? I had to take mine to a second dealer to get it done as the first service manager said "your NEVER getting acoustic glass." He gave me the operating as normal speech.
Did you you have to ask for the felt upgrade or did they do it as part of the TSB? I called my SA and he only saw the order for glass and did not mention anything about the seals. Do you think I should call to clarify or just see what happens. I don't want to seem like a pain in the ***. I'm running out of dealerships in my area as they all lack customer service (with the exception of these guys so far).
thanks Stan
Did you you have to ask for the felt upgrade or did they do it as part of the TSB? I called my SA and he only saw the order for glass and did not mention anything about the seals. Do you think I should call to clarify or just see what happens. I don't want to seem like a pain in the ***. I'm running out of dealerships in my area as they all lack customer service (with the exception of these guys so far).
thanks Stan
Thread Starter
Senior Member
Joined: Apr 2015
Posts: 399
Likes: 24
2017 C43 Sedan
Disagree.
It makes pretty much no difference in appearance - still a glass that's transparent. It's the noise cancelling feature that you want, not how it looks. Although some owners had mentioned it made negligible difference by replacing original glass with acoustic glass.
It makes pretty much no difference in appearance - still a glass that's transparent. It's the noise cancelling feature that you want, not how it looks. Although some owners had mentioned it made negligible difference by replacing original glass with acoustic glass.
Member
Joined: Apr 2015
Posts: 130
Likes: 2
From: Ottawa, Canada
MY16 C300
Does it make a significant difference? I thought you had said your cars weren't bad (re wind noise).
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MBWorld Fanatic!
Joined: Nov 2015
Posts: 1,255
Likes: 154
From: Massachusetts USA
2017 C43 sedan
It doesn't make a difference.. I had a car with acoustic glass and a car without and the difference isn't even detectable.. my car I have now doesn't have it and I was worried when I first got it, but I have no wind noise.. in fact I think this car is even quieter than the car that had the acoustic glass..
MBWorld Fanatic!
Joined: Jan 2015
Posts: 2,075
Likes: 59
From: Manchester, UK
BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus
The singular most important thing here is what is causing this noise, not how to mask it. I find my acoustic glass has made an improvement but i can still detect high pitched wind noise at over 70mph.
ive tried to determine its source, I've really no idea. It's worst for me on the passenger side (UK).
ive tried to determine its source, I've really no idea. It's worst for me on the passenger side (UK).
MBWorld Fanatic!
Joined: Sep 2014
Posts: 1,822
Likes: 33
From: Whitefield, NH
2015 C300 Sport: Palladium, Premium, Multimedia, Leather, BLIS
I did not have a real wind noise issue on either of my C300's. I could hear wind gusts, and road noise though. The TSB did quiet the car down a bit, and I rarely can hear even the worst wind gusts. In normal driving, there is a slight reduction in road noise. Overall, it is an improvement, but not a dramatic one.
Newbie
Joined: Sep 2019
Posts: 5
Likes: 2
2018 C-300
New MB owner. 2018 C300 (manuf 5/18). Started noticing wind noise, I'll describe it since I don't know if I have it bad or if it used to be worse or what. It's like a whisper of wind is coming through the door - drivers side door is where i hear it toward top and front of window - hard to pinpoint. I get door pillars have wind noise on the outside, but this seems like it's getting in. Is that what others have? It's not particularly loud, it just doesn't sound right - sounds leaky.
Member
Joined: Aug 2016
Posts: 158
Likes: 4
From: Seattle
2019 GLC300 4matic, 2019 C300 4matic, 2018 C300 4matic, 2009 C300 Flex, 2004 C230 Kompressor
New MB owner. 2018 C300 (manuf 5/18). Started noticing wind noise, I'll describe it since I don't know if I have it bad or if it used to be worse or what. It's like a whisper of wind is coming through the door - drivers side door is where i hear it toward top and front of window - hard to pinpoint. I get door pillars have wind noise on the outside, but this seems like it's getting in. Is that what others have? It's not particularly loud, it just doesn't sound right - sounds leaky.
