NVH parts replacement intervals
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Joined: Jul 2021
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2015 X166 GL550
NVH parts replacement intervals
My '14 E350 4MATIC has about 85k on it, primarily a garage queen at this point as I use a different car for commuting (but so well maintained I can't bring myself to let it go for the same price as all of the others).
I'm wondering when people find it worthwhile to change out things such as the engine mounts and consumable suspension parts (bushings, shocks, etc) for a noticeable difference in NVH? I already changed out a collapsed trans mount roughly 15k ago when doing a trans service but the engine mounts *seemed* fine at that point, and the shocks must be somewhat worn by now, though I'm not sure how much a difference changing them would make. Some say 50-75k, some are pushing them past 150k. I do live in an urban area with less-than-perfect road surfaces.
I'm wondering when people find it worthwhile to change out things such as the engine mounts and consumable suspension parts (bushings, shocks, etc) for a noticeable difference in NVH? I already changed out a collapsed trans mount roughly 15k ago when doing a trans service but the engine mounts *seemed* fine at that point, and the shocks must be somewhat worn by now, though I'm not sure how much a difference changing them would make. Some say 50-75k, some are pushing them past 150k. I do live in an urban area with less-than-perfect road surfaces.
Last edited by SlyAsA; Jul 25, 2021 at 02:26 AM.
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Joined: Jun 2020
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'11 E350, '11 E550, '98 M3, '95 E320
There's no one simple answer... at the end of the day if you can't tell, then it doesn't really matter, right? The core of the question is about spending money.
Motor/Trans mounts are typically 60-100k, 6-10 years. First signs are vibration in cabin/pedals when shifting into drive/reverse with brake on. Some who are perceptive and have owned the car for a while, just "feel" more vibration in the cabin/pedal while driving. Suspension components IME are 90-120k, 10+ year.... a lot of it will depend on the roads driven (highway vs. NYC/DC metro pot hole heaven). Bushing and balljoints will start clunking, squeaking, and/or creaking when they wear. Shocks will result in harsher ride and more body movement.
Having two 2011 100k W212s, both needed motor and trans mounts. All front suspension ball joints are tight and boots are good. The only bushing due for replacement is the thrust arm one, based on cracking and "feel". I plan to replace the shocks as well, having one of them out it lacked rebound. No visible signs of leakage, but the ride seems harsher.
Motor/Trans mounts are typically 60-100k, 6-10 years. First signs are vibration in cabin/pedals when shifting into drive/reverse with brake on. Some who are perceptive and have owned the car for a while, just "feel" more vibration in the cabin/pedal while driving. Suspension components IME are 90-120k, 10+ year.... a lot of it will depend on the roads driven (highway vs. NYC/DC metro pot hole heaven). Bushing and balljoints will start clunking, squeaking, and/or creaking when they wear. Shocks will result in harsher ride and more body movement.
Having two 2011 100k W212s, both needed motor and trans mounts. All front suspension ball joints are tight and boots are good. The only bushing due for replacement is the thrust arm one, based on cracking and "feel". I plan to replace the shocks as well, having one of them out it lacked rebound. No visible signs of leakage, but the ride seems harsher.
Thread Starter
Newbie
Joined: Jul 2021
Posts: 14
Likes: 16
2015 X166 GL550
There's no one simple answer... at the end of the day if you can't tell, then it doesn't really matter, right? The core of the question is about spending money.
Motor/Trans mounts are typically 60-100k, 6-10 years. First signs are vibration in cabin/pedals when shifting into drive/reverse with brake on. Some who are perceptive and have owned the car for a while, just "feel" more vibration in the cabin/pedal while driving. Suspension components IME are 90-120k, 10+ year.... a lot of it will depend on the roads driven (highway vs. NYC/DC metro pot hole heaven). Bushing and balljoints will start clunking, squeaking, and/or creaking when they wear. Shocks will result in harsher ride and more body movement.
Having two 2011 100k W212s, both needed motor and trans mounts. All front suspension ball joints are tight and boots are good. The only bushing due for replacement is the thrust arm one, based on cracking and "feel". I plan to replace the shocks as well, having one of them out it lacked rebound. No visible signs of leakage, but the ride seems harsher.
Motor/Trans mounts are typically 60-100k, 6-10 years. First signs are vibration in cabin/pedals when shifting into drive/reverse with brake on. Some who are perceptive and have owned the car for a while, just "feel" more vibration in the cabin/pedal while driving. Suspension components IME are 90-120k, 10+ year.... a lot of it will depend on the roads driven (highway vs. NYC/DC metro pot hole heaven). Bushing and balljoints will start clunking, squeaking, and/or creaking when they wear. Shocks will result in harsher ride and more body movement.
Having two 2011 100k W212s, both needed motor and trans mounts. All front suspension ball joints are tight and boots are good. The only bushing due for replacement is the thrust arm one, based on cracking and "feel". I plan to replace the shocks as well, having one of them out it lacked rebound. No visible signs of leakage, but the ride seems harsher.
I can't say that I've noticed any ride issues or any noises, but I plan on keeping this car for as long as it'll go since the 17+ E is a disappointment for me, and I don't trust that in my 7 years of ownership I'm able to pick up on the slight degradation, which is why I ask.
