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Exhaust noise

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89K views 81 replies 36 participants last post by  The gle guy  
#1 ·
i took delivery of our new 2016 GLE 350 and instantly noticed a high pitched whine which i was told was normal exhaust noise and i would not even notice it. Well 650 miles later i am ready to dump the car. does anyone have the same issue? know of a fix? My wife loves the car otherwise. I have been back to the dealer and emailed Mercedes :mad:
 
#73 ·
Picked car up today. The car sounds great as all of the annoying sounds are gone. The muffler was replaced with the exhaust pipes that curve down which defeat the resonating sounds that were created in the bumper portals. All work was covered under warranty. One has to wonder if Mercedes will create a recall for all of the GLE 350's that have been sold.

ps.. I was give a C300 as a loaner that had the exhaust that went straight thru the portals in the bumper and it did not have any of the annoying sounds that GLE had.....
 
#75 ·
Today I called Mercedes USA customer service to advise that exhaust sound problem was resolved by dealer installing a 2015 muffler system. Wanted to lodge complaint that I purchased a 2017 GLE and that German engineering solution was to use 2015 parts while I still have exhaust ports that are now holes in my bumper. Agent put me on hold and finally came back and said sound I heard was normal, but dealer accomadated me by using 2015 muffler system. THINK ABOUT THIS.... they admit no wrong engineering, however the dealer just decided to replace entire muffler system at a +$1000 warranty cost even though there is nothing wrong..... I just completed a JD Power survey and detailed the exhaust noise issue in the cabin and the poor response from Mercedes Corporate.

This was my first and LAST German Engineering Mercedes......... They have a serious engineering problem with their 2017 GLE 350 vehicle exhaust system and they will not step up to admit it and provide owners with a satisfactory solution. Individual state lemon laws.........stay tuned
 
#76 ·
This isn't the first model Mercedes Corporate are being ridiculous about. The GLC is going through some huge issues as well and MB is of no help... still. They're go to answer for everything is "it's normal" or they pretend there's just no issue at all, even after all of the complaints. I'm pretty discouraged from being an MB customer at this point as well, and I'm sure there are many more.
 
#80 ·
GLE350 Exhaust Noise Solution
I recently purchased a 2017 GLE350. With the new car excitement, at first I failed to notice the annoying exhaust whine or moan at 1500 rpm. But when I did I felt I could not live with it. The dealership was no help and refused to concede that the car had a problem. Back at home I looked under the car and immediately deduced that the problem would be easy to solve. So with a little roofing flashing, two large hose clamps and ten minutes of time I cured my moaning GLE. The finished project is not the best looking thing but the car sounds perfect now.
The solution was to roll up about a 9" x 10" piece of aluminum flashing and slide it into the fake exhaust port from the outside. Then slide it on to the exhaust pipe and clamp it tight with the hose clamp. It may need to be adjusted to looked good. Then do the other side. See the attached pictures. I plan to take the car to a muffler shop and have a professional job done.
 

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#82 ·
I fixed my recently bought Gle350’s exhaust whining at 1500 to 1800 rpm by cutting both exhaust tubes and adding new ones facing down and outwards, $150 at a muffler shop. Car is now very quiet and no whining noise. If you buy a nice, clean low miles 2017, 2018 GLE350, this is the solution.
 

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