GL Class (X166) 2013-2015 after facelift became GLS (X166)

My GL 450 sounds like a diesel

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Old 06-06-2019, 04:27 PM
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2015 SL550, 2017 GLS 550, 2010 G550, 1995 E320 Cabriolet
My GL 450 sounds like a diesel


Any idea why it sounds like this?
Old 06-06-2019, 08:53 PM
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Is that a v6 or v8 450. I have 2015 450 (v6) and it sounds like this at the exhaust end at first start up. Takes it about 30 seconds and it sounds normal
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Sanfrn26 (09-10-2022)
Old 06-06-2019, 10:26 PM
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How long have you owned the vehicle? Has it always sounded this way during your ownership? Sounds OK to me.
Old 06-06-2019, 11:34 PM
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2015 SL550, 2017 GLS 550, 2010 G550, 1995 E320 Cabriolet
Originally Posted by chassis
How long have you owned the vehicle? Has it always sounded this way during your ownership? Sounds OK to me.

This is a new sound for me. I've owned and own numerous Mercedes and I've never heard anything quite like this.

Also, one other thing I should mention. The car occasionally emits an extremely potent gasoline smell - like the engine is burning very rich. Again, I've never experienced this problem with any other Mercedes.
Old 06-07-2019, 03:11 AM
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It's the time it takes for the exhaust system to warm up to operating temperature
Old 06-07-2019, 11:01 AM
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GL 450
Noise

I have a 2014 V8, twin turbo. mine started making a noise like that, took it to the dealer, could not find anything wrong. the oil burning was within spec, 5 months later, i need a new engine.
The is some discussion around faulty heads and the valve guides coming lose, not sure.

I hope i am wrong but keep an eye on it.
Old 06-07-2019, 05:17 PM
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Originally Posted by JD101b
Also, one other thing I should mention. The car occasionally emits an extremely potent gasoline smell - like the engine is burning very rich. Again, I've never experienced this problem with any other Mercedes.
https://mbworld.org/forums/gl-class-...016-gl450.html

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