Cost of Replacing Engine Mounts

[skipndallas]

Told that I need replace both my engine mounts, which have "collapsed." How much should this reasonably cost. Also, if I'm not noticing any major driving problems, do I have to replace them? What's the danger if I don't?

['91 300CE]

Replace them... it will mess up your transmission as the engine is not perfectly lined up with it.

I just had mine done... both the engine mounts and the transmission mounts... total at the dealer was 550.00.

I don't understand why people try to not do maintenance... especially when something needs to be replaced. If they weren't needed, would they be there?

[skipndallas]

Thanks for the input. The dealer didn't mention anything about the transmission line-up and made it sound like it only affected the "ride." Cost quoted was $635 ONLY for engine mounts, not the transmission mount, which sounds expensive to me after searching parts prices of between $80-$100 per mount. Part of my cost calculus also is the value of the car--a C220 with 100,000 miles with residual value of only $4,000 to $5,000. Of course, if it's absolutely necessary for continued performance of the car, then it makes sense, which otherwise has been great.

[Mercedes Benz of Florida]

Originally Posted by skipndallas

Told that I need replace both my engine mounts, which have "collapsed." How much should this reasonably cost. Also, if I'm not noticing any major driving problems, do I have to replace them? What's the danger if I don't?

Do the Mounts Yourself and Save a Bundle of Money.
It's really not that hard. Laborious Yes. Hard? No.
Expect to spend the Weekend to do it; but that's because you
may not have ever done it before.

Did you check with an Independent/Indy Mechanic yet? Price $$$-wise?

[xvvvz]

Usually the big reason for changing the engine or tranny mounts is that it will cut down on the vibration at idle which usually becomes very noticable when the mounts collapse with age.

[juxtamit]

Originally Posted by skipndallas

Told that I need replace both my engine mounts, which have "collapsed." How much should this reasonably cost. Also, if I'm not noticing any major driving problems, do I have to replace them? What's the danger if I don't?

If your going to have your engine mounts done you might as well get the trans mount done too. Replace the entire system if you will, so everything will be fresh. A broken motor mount will result in a minimal 20% loss of horse power. Your gas mileage will also be effected.

[Benzonline]

Im contemplating in doing this aswell. I noticed more vibration recently.

Around what mileage do they usually go on the W202? Im at 75,000 miles.

[xvvvz]

I don't know, but this point, I think it is as much an issue about age as mileage in many cases.

[Metafly]

I did a search for DIY mount replacement (Engine and Tranny) to no avail. Anyone know where to find instructions on how to? I have a 1994 C280. Thanks. Michael

[spaniasc]

Front and rear engine mount replacement with the engine in the vehicle is covered well in the Haynes series manual for my vehicle and is in the Engine chapter. If it is not covered in yours you might try the 123 chasis and see if it is similar.