Occasional Sulfur smell from my 2021 C63S Cab
Thread Starter
Senior Member
Joined: May 2015
Posts: 342
Likes: 91
From: Florida
GLE400, 2017 Porsche 911S
Occasional Sulfur smell from my 2021 C63S Cab
I have noticed an occasional sulfur smell occurring randomly while driving. I can't really say it occurs during aggressive acceleration. It doesn't always happen and the odor goes away quickly. I once test drove an AMG GT 63 and every time I would accelerate, the odor was terrible. I realize the odor is from the Cat converter but I would like to know if it lessens as the car is driven more? Any remedies?
Super Member
Joined: Oct 2019
Posts: 841
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C43
Agreed. Perhaps it is a function of perception, but I have never experienced a sulfur smell on a whole litany of street and track cars. Was this experience prior to the car being fully warmed up? Cats work at max efficiency once fully heated up. Prior to that you will smell fuel not fully burned.
Thread Starter
Senior Member
Joined: May 2015
Posts: 342
Likes: 91
From: Florida
GLE400, 2017 Porsche 911S
It seems that it occurs when the car is warmed up.
As for the crayon smell, I had it very bad in an SLK55. They replaced carpet and almost everything else but no improvement. It smelled like burnt crayons. It isn't uncommon in some MB cars
As for the crayon smell, I had it very bad in an SLK55. They replaced carpet and almost everything else but no improvement. It smelled like burnt crayons. It isn't uncommon in some MB cars
Member
Joined: Apr 2017
Posts: 174
Likes: 60
From: Miami
C63s Sedan
my car def smells like that when it sits in the sun for a while, I read that its the glue German cars use.
Out Of Control!!
Joined: Nov 2018
Posts: 11,468
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From: San Francisco Bay Area
2019 C63CS
No, never have or had a sulfur smell coming from the car. My understanding is if you have the sulfur/rotten egg smell then there's an issue. Fuel is getting into the cat, like explained here:
https://www.centralparkgarage.com/bl...ke-rotten-eggs
https://www.centralparkgarage.com/bl...ke-rotten-eggs
