Originally Posted by SD Blue

From your photos, you are definitely in need of upper control arms. With the condition they are currently in, you probably are hearing several popping noises, especially when braking. Not to mention the possibility of severe tire wear. Pretty easy repair.

The sway bar bushings are a little unclear in the photos but the tend to either give you a harsh ride or a lot of wallowing when they wear. Very inexpensive and straight forward repair.

Yes, the lower control arm bushings can go bad. They usually give a slight shifting feeling in turns and cause a lot of tracking on uneven pavement. They are a little more involved and you will need an MB spring compressor which is available to rent here on this forum.

The main thing that concerns me is that subframe mount. That is some pretty severe rust in a very critical area. I would get that looked at by someone very familiar with MB's and rust repair as soon as possible. The "clip", bushings and hardware are all replaceable in that area.