C300 Seat comfort
bolstered.
Last edited by c4004matic; Oct 22, 2015 at 10:54 PM.
Last edited by Hate my seats; Apr 8, 2016 at 10:38 PM. Reason: Want to add to it
Here's a little trick I learned: custom pad the seat. Put support exactly where your body needs it to be comfortable. It takes a little experimentation but it can't be any worse than constantly adjusting the seat and never making progress.
You will need;
A set of sheepskin seat inserts from www.comfysheep.com.
A couple of sheets of 1/2" thick medium density foam from a craft store.
Install the inserts. The front end just hangs so I put a safety pin through the front edge and use a couple small bungees under the seat to secure it. The rest has its own attachment system.
Cut a piece of foam a little less than the width of the insert and slide it between the insert and the seat back where you need more support. Put a sheet on the seat bottom too. If you're having tailbone pain, cut a little "U" out where your tailbone hits to get the pressure off. The insert will hide the foam from view and hold it in place.
The combo of the sheepskin, which alone is a big improvement in comfort, plus the 1/2 foam should be plenty, but go to 3/4 or even an inch thick foam if necessary.
Here's a generic shot of an insert.

I have them in the C with padding for the seat bottom, which is too firm and makes my bony *** hurt after awhile.
Another thing that sucks is everyone telling you you're nuts, or them explaining how the seats are the most comfortable they've ever had, so there's something wrong with you.
Seats are ergonomically designed to suit the vast majority of body types, but some designs do manage to hit a certain minority of people in precisely the wrong way and make them miserable. Being miserable (and trapped) in your new Mercedes sucks.
The Best of Mercedes & AMG
I am a bit overweight, and the seats basically squeeze me. I so desperately want to be comfortable in this car because my g37x lease is up in 2 months and 1 of our options was for the C300 to be my primary car, getting a GLC300 or other small SUV for my wife.
When I compare positioning in the 2 cars, I am very similarly positioned (distance from the steering wheel and pedals, height, level of recline, etc.). I wish there was an adjustment on the side bolsters.
Once you get it the way you want it, hide the foam with a seat insert from Comfy Sheep. (Comfysheep.com). I have one in my car if you need a pic, although I used mine to build up the seat bottom.
After you finalize the padding ( it'll take a few weeks of trial and error, plus your upper back muscles are already sore) you can use spray adhesive to permanent attach the foam to the seat insert. In the meantime it'll look bad and slide around a bit.
A generic pic of an insert:
Attachment 337208
Last edited by Mike5215; Aug 7, 2016 at 11:43 PM.







