S400 Road Noise
Anyway I have told the dealer that I want them to take the car back and part exchange it for anything other than a MB. I shall probably go back to an XJ which I am really really regretting I let go.
I am at a loss. on a very smooth surface the car is very quiet but on, what I would call normal roads, the sound is very very high (over 80dB on my iphone noise level app. On the smooth road it is 58dB so I know the app is working correctly). And at the same time the floor vibrates so it is obviously coming from the road not through the windows or vents.
The dealer, Yanase, which I bought it from vigorously denies that anything is wrong with the car so we are now at loggerheads. Problem is of course that there is no published specification for cabin noise so basically MB can say whatever they want.
Anyway I have more than US$100k sunk in this lemon and I do not intend to write it of to bad luck.
My gut feeling is that there is something inherently wrong with either the steering linkage or front suspension but I will have to fight hard for MB to admit this and do something about it.
Any advice is welcome and appreciated.
I am at a loss. on a very smooth surface the car is very quiet but on, what I would call normal roads, the sound is very very high (over 80dB on my iphone noise level app. On the smooth road it is 58dB so I know the app is working correctly). And at the same time the floor vibrates so it is obviously coming from the road not through the windows or vents.
The dealer, Yanase, which I bought it from vigorously denies that anything is wrong with the car so we are now at loggerheads. Problem is of course that there is no published specification for cabin noise so basically MB can say whatever they want.
Anyway I have more than US$100k sunk in this lemon and I do not intend to write it of to bad luck.
My gut feeling is that there is something inherently wrong with either the steering linkage or front suspension but I will have to fight hard for MB to admit this and do something about it.
Any advice is welcome and appreciated.
If you come to the latter conclusion then go drive other cars (different models, brands, whatever) on the same roads with the same app until you find one that is substantially quieter and report back
Last edited by MBNUT1; Dec 21, 2014 at 09:59 AM.
The Best of Mercedes & AMG
I am at a loss. on a very smooth surface the car is very quiet but on, what I would call normal roads, the sound is very very high (over 80dB on my iphone noise level app. On the smooth road it is 58dB so I know the app is working correctly). And at the same time the floor vibrates so it is obviously coming from the road not through the windows or vents.
The dealer, Yanase, which I bought it from vigorously denies that anything is wrong with the car so we are now at loggerheads. Problem is of course that there is no published specification for cabin noise so basically MB can say whatever they want.
Anyway I have more than US$100k sunk in this lemon and I do not intend to write it of to bad luck.
My gut feeling is that there is something inherently wrong with either the steering linkage or front suspension but I will have to fight hard for MB to admit this and do something about it.
Any advice is welcome and appreciated.




Maybe I have been in Japan too long and got used to real customer satisfaction, but anyway the lack or response from MB is regrettable.
I will anyway be taking the car to a third party to have them give their opinion.
Maybe I have been in Japan too long and got used to real customer satisfaction, but anyway the lack or response from MB is regrettable.
I will anyway be taking the car to a third party to have them give their opinion.
Maybe I have been in Japan too long and got used to real customer satisfaction, but anyway the lack or response from MB is regrettable.
I will anyway be taking the car to a third party to have them give their opinion.
My ultimate problem will be getting MB to do something about it. Obviously the noise has a cause and MB finding and rectifying it would require them to admit there is a problem. Till now the dealer adamantly refuses to acknowledge there is a problem. Hopefully the video will help my cause. I had hoped (obviously mistakenly) that just the hint of dissatisfaction would have had MB bending over backwards trying to help. This is an S Class which I had also mistakenly believed to be as good as it gets.
Will post the video once I have made it.
So I have done what I should have done a while back. I sold my nice new S400 and bought a second hand XJ.
It has been interesting push water upstream with MB but enough is enough.
So I have done what I should have done a while back. I sold my nice new S400 and bought a second hand XJ.
It has been interesting push water upstream with MB but enough is enough.




Still the euphoria of being able to get back to a Jaguar makes it worth while. And even though Jaguars are not perfect for some inexplicable reason they can be forgiven. I mean its British..(like me)
Arguably, Germany has world's smoothest roads and best unrestricted fwys (and lane discipline) to enjoy perf cars
But US has world's cheapest MBs (or any car) and most consumer-friendly lemon laws if car is defective....quite difft from Japan/Germany
That said, have several colleagues who buy 1-2 new 65/yr (and have done so for yrs)....all have had at least one lemon 65....seamlessly handled by their usual MB dealer in BH/SF (though incredibly annoying when one faces the inevitable multi-wk lemoning process)
But anyone who routinely consumes any luxury good/svc of even far greater cost than a $250K 65 is familiar w/notion that some finite lemon % exists...real question is how seamlessly one's usual dealer/counterparty handles process....repeat customer base for any product/service reveals much
My sense is that, partly thanks to fact US has world's wealthiest plaintiffs' lawyers, affluent consumers in US are far more protected than similar consumers anywhere on planet vs mfrs' defective products.....though I still am jealous of German autobahns (damn the corrupt politicians in CA who won't spend our tax dollars on basic smooth rds first)....but not jealous of Germany's (or Japan's or non-CA US') crap weather or food vs SF/BH....
That said, I thought Japan is good, being one of the first world asian countries, and being a country with quite a good reputation for customer service. Evidently from this thread, don't think this was the case.. or maybe they are just lazy to figuring out what was wrong with it? as the OP said.. they replied "sorry, not interested"
I just found out a while ago, while lurking on Porsche Macan's forum, that Japan buyers are getting an aftermarket Clarion head unit instead of PCM unit like the rest of the world gets (not just for Macan, but also for the whole Porsche line up in Japan). Why? it's been said that Porsche Japan is too lazy converting PCM for Japanese nav map.
I mean, they get Mercedes' COMAND and BMW's iDrive no problem, why not PCM?
Sorry for the OP for having to go through with all this nightmare.




