GLS Class (X166) Produced from 2016 to 2019

Annoying loud exhaust noise on high way

Old 04-24-2018, 05:01 PM
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GLS450 2018
Annoying loud exhaust noise on high way

hi everyone .
Just got new GLS 2018 . First drive From NYC to Ohio and back perfect except. The exhaust in the rear is very annoyingly loud, when driving with/without cruse control. This noise happens only when vehicles lightly excel. For example (while driving at say 60 mph and you lightly press on the gas pedal to keeping up with traffic) then you hear the loud noise . However Hard excel is fine . Example taking off and speeding up hard on the pedal.
Anyone experienced this issue?
Old 04-24-2018, 10:40 PM
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What engine do you have? I have a ML350 and have not noticed the problem.
Old 04-25-2018, 09:04 PM
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Hi Isawelvis, thanks for your response . I have the 2018 GLS 450 V6 turbo with the appearance package . Note I had the GL450 2014 V8 before this new GLS 2018 and was perfect with no noise . Reason for questioning this new found noise . Thanks.
Old 04-25-2018, 09:07 PM
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Also anyone who can help to turn my Running board light on?
Old 04-25-2018, 09:17 PM
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Originally Posted by Intercool007
Also anyone who can help to turn my Running board light on?
That is a different question...which should be a different post
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Old 04-25-2018, 09:31 PM
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The V6's do have some strange exhaust harmonics compared to the V8, but it shouldn't be that noticeable. Take it to the dealer, if nothing else compare it to another identical GLS and see if it's normal.
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