Engine Mounts
Thread Starter
Junior Member
Joined: Jan 2021
Posts: 17
Likes: 5
From: Houston
2021 GLS 450
Engine Mounts
Has anyone had to replace engine mounts? I had an independent shop tell me it's a common issue with these vehicles, and that mine were leaking.
I only have 55k miles. It seems extremely early to me.
I only have 55k miles. It seems extremely early to me.
MBWorld Fanatic!
Joined: Jun 2017
Posts: 1,350
Likes: 774
2020 GLS450 (wife) / 2024 Ford Bronco (mine) / 2014 VW Tiquan (son)
It's more about time than mileage, and MB mounts usually go for about 5 years before they start to show signs of compression. Ours is 5 years old, 90k on the clock, and I felt a slight rumble under the center arm rest the other day when it shifted into a different gear, a clear sign of the transmission mount compressing a bit too much. My W212 did the exact same thing at about year 4, but on that car (2014 E350), one of the problems was the engine heat and proximity to the mounts. The heat accelerates the softening / compression. We're probably getting close to the engine mounts too, judging by differences in engine sound in the cabin. I can just "feel it". Not quite yet, but I can tell their replacement isn't to far off in the distance now.
Honestly though, I've never actually seen an engine mount "leak". We have no signs of leaking anything on ours. I've heard of engine mounts leaking, but I have never actually seen one that did, and I've always asked to see the old mounts when pulled from the car. Always been solid compressed rubber.
Honestly though, I've never actually seen an engine mount "leak". We have no signs of leaking anything on ours. I've heard of engine mounts leaking, but I have never actually seen one that did, and I've always asked to see the old mounts when pulled from the car. Always been solid compressed rubber.
Junior Member
Joined: Jul 2009
Posts: 56
Likes: 2
From: Sunapee, NH
1999 CLK430, 2002 SL600 Silver Arrow, 2024 GLS450, 1980 Rolls-Royce Corniche FHC
Engine Mounts
For what it's worth - hey failed on my 2009 GL350 at about 50K miles - they were silicone filled and the mounts ruptured and the silicone started oozing out. Mechanic first thought it was grease - but then figured it was the engine mounts. I expect the design has changed by now...
