My 2016 C63S was delivered with the largest combination of buzzes, squeaks, and rattles of any new car I have ever purchased. Over rough roads, it was like riding in a NYC cab with 300,000 miles. And it was like this at time of delivery. What a letdown. My 2009 C63 was drum tight from new and all the way through 20,000 miles. So has MB starting going backwards in quality? Before the disgust got to me to the point of thinking about trading this car, I started trying to eliminate these noises. It took many hours of trial and error with some tense moments (I do not have a factory parts reference manual) but I got rid of these noises. Now my C63S is great. For you DIY types, have at it. But if you are not a DIY type, you can give this list to your dealer and have them fix it all. They may say that all new C class cars make these noises (which is probably true) and refuse your warranty claim. Good luck.

First, here the list of the loose, rattling parts I found and how I tightened them. 1. The plastic band inserted into the periphery of the central console is loose and rattles over rough roads. Go to a fabric store and find just the right thickness of black crochet thread and jam into the insert until it disappears. The thread will fill the gap and the rattling will stop. 2. The plastic band around the LCD panel is also loose. Same solution by filling the gap with black thread that will disappear. 3. The hinged cover doors over the rear center console rattle. Go to the hardware store and find small diameter self-adhering thin black felt pads. Open the doors and press a pad on each side near the locking mechanism. The doors will no longer rattle. 4. The door for sunglasses of the overhead panel is also loose when closed. Put a couple of pads in place to tighten the fit there too. That's it for the rattles.

Now on to the buzzes and squeaks caused by plastic trim pieces rubbing against each other, the way crickets chirp. I have eliminated them mostly by using WD40 spray. 1. Find the Youtube showing how to pull up the center console which has numerous snap fittings underneath that are plastic on plastic. Lift it a bit, get the can to spray underneath where you hear squeaking when flexing the console in your hands. Flex, spray, flex, spray, flex, spray, etc., until no more squeaks and snap the console back in. Don't do this unless you like DIY. Be careful not to scratch anything. 2. The two instrument bezels also squeak. Rather than spray very much around this area, I pushed some black felt between the gaps until the parts separated from each other in such a way that the felt disappeared. 3. The overhead console is quite squeaky. Don't spray WD40 into the spaces but rather dab some in with your finger. If you are adventurous, remove the entire console for access by prying it out at the rear of the headliner with a thin screwdriver (be careful). Once pried out, tug on it backwards and it will come loose hanging only by electric wire connectors. There is now enough access to find most of the squeaky parts. 4. All four door panels have creaking trim snapped on them. Press the trim so as to flex it and spray where there is squeaking.

Now I can drive right over cobblestone roads with complete silence... the kind of silence I would have expected for this kind of money. MB will get tons of warranty claims and pay heavily for this cheap construction. I bet that by 2018, they will tighten up the tolerances on these interior parts up to previous MB standards... and hopefully fire the production managers responsible for this blunder.

 

How long did it take?

 

Wd40... Smells nasty and not meant for this purpose ... It absorbs water and moisture ... White lithium grease from wd40 on the other hand may have been a better choice ... And less better a silicone spray.. The silicone dries up quick and you've done all that work for nothing

It'll temporarily fix the squeak and then it'll be back

 

Common problems with all current gen C-Classes in North America. Many other uses get the exact same things you're describing.

This is the first C-Class that isn't manufactured in Germany (built in Alabama). My guess is that could be a large cause of the quality issues we have here in North America

 

Hat off to someone who actually fixed it himself and was kind enough to share the fixes with everyone.

 

Man...I just put a deposit on a 17. Now you've got me nervous about my decision.

 

Not only in North America, the platform has quality issues in many other countries including the ones built in Germany.

 

Maybe the noises will be worked out in the coupe.

 

I had to take my car back for squeaks and creaks. Now I have a clicking by my left ear... right where the seatbelt is. **** is pissing me off. Nothing but problems with a $100,000 car... should have just bought a Lambo.

 

Cannot deal with squeaks and rattles, let alone buzzes! I test drove an C63 S Ed 1 Saloon which had an irritating rattle from the dash over rough roads, thought it was a one off. Re-considering my order

 

Bro. My lambo sounds a lot to. Just saying

 

My 911 TTS had 15+ different rattles, spent over a month getting them sorted myself (bits of microfibre cloth, oils, sound deadening tape) and with a main Porsche dealer.

My £30k Golf R has not a single squeak or rattle.

 

Thanks JFO53 - I have now solved all but one - now even when driving in paved roads, the car is silent, except one irritating sound, somewhere right side rear or middle rear. It is not probably sunroof - maybe roof panel near rear window. Will test with some pads.

 

Is yours mk6 or 7, had my mk7 before I bought C63 and that car was solid just couldn't stand that 4 banger any longer.

 

Mk7. Feel exactly the same way. My 911 is amazing... so I hardly drive it and keep it under car covers (two, one soft, one outdoor ... I know... ridiculous and pathetic!) The Golf therefore is the DD and it is just a bit boring... I tuned it to 380bhp... still boring AND I feel like I should be 20 something not 50! Test drove a C63 saloon... Nice, felt fun and doesn't look like you need to be 20 something to drive it!

But, on topic, can't bear rattles, just want the noise of the engine/exhaust, so this thread worries me!

 

Had/having exact same issues - numerous buzzes, squeaks & rattles. 2016 C63 - New Zealand. There seems to be tonnes of complaints about this in the new model yet MB haven't acknowledged it with a TSB. Sure its not a safety issue or anything heck it is unpleasant and they will know about it.

Bravo to Jfo53 for your detailed post. Had a go at most on the list and the worst of the "noises" are now gone with a few still there - the drivers air vent joined the symphony a few days ago

Any further experiences out there? Do share...

 

Do not use silicone or WD40. Use dry lube. It's a better, cleaner solution and will last until the parts find their groove.

 

im at almost 8k miles and mine is much much better. I have one rattle left that I plan to take care of but other than that there's minimal to no squeaks or creaks.
Seems it needed to work the new bugs out.

 

I want to point out the coupe ain't better. I have squeaks the from center console that comes and goes that developed after 1500M, I also here squeaking from both seat belt compartments. Dealership said its 'normal' due to poor roads which just pissed me off but didn't have time to argue with them. Gonna try to go to another dealership soon.

 

yeah id check somewhere else. My dealership went through and made a list with me then kept my car for 2 days to fix everything. No questions asked.

 

Dealer fixed most of my rattles, exactly two (form infotainment screen and somewhere on the back pillars). They couldn't fix those seals that squeak and rattle depending on roads you're driving, you wouldn't believe how many different sounds they make that gives you feeling of a an old car. After lubing them car was so quiet that I got spoiled, after my recent dealer service I had a brand new C loaner that had those top seals without exposed rubber and car was silent. So my plan is to order all 4 of them and make them install it on my car.

 

What- there are different seals?. Pics???

 

 

My 2018 c43 has the same Overhead console noise!
When I put pressure on the plastic it stops... I bought a set of pry tools to see if I can stop this Hideous squeals and creeks....

 

Go track the car a few times.. now youll really hate how much more the car makes noises while making a simple turn lol