The cup holder in the center console may break.Google+
Car Problem Reports
Mercedes-Benz E320 Center Arm Rest Cup Holder May Break
Mercedes-Benz E320 Problem
Average Mileage: 81,410 mi (20,000 mi - 160,000 mi)
Visitor, 2004 Mercedes-Benz E320, 59,812 mi
Add me to the list of cup holders that are cheap or just poorly designed that decide not to pop up
Visitor, 2003 Mercedes-Benz E320, 50,000 mi
Made of flimsy plastic. Bad design, sticks out and easy to bang into.
In and out mechanism just stopped operating and cup holder got stuck in
Visitor, 2003 Mercedes-Benz E320, 127,000 mi
My cup holder failed first under warranty and was replaced by MB. As soon as my warranty was up, the cup holder failed again. I removed the assemly, found poor designed plastic retaining tabs for the spring had broken. I replaced the spring retaining tabs with the thin metal piece (size of a letter return label) and reinstaller the cup holder. That was 2005, and even with lots of use and no special care in use.......never a problem.
Cup holder stuck down and won't come up.
Visitor, 2004 Mercedes-Benz E320, 50,000 mi
cup holder broke. replaced it for $85
Visitor, 2005 Mercedes-Benz E320, 28,000 mi
cup holder does not spring up or open ! very cheaply made !
Visitor, 2005 Mercedes-Benz E320, 52,520 mi
My cup holder got stuck for no reason. I just pull the whole unit out because I am not paying to get it fix. Cheaply made for sure.
Visitor, 2004 Mercedes-Benz E320, 90,000 mi
Bought a new cupholder from Poland on the web. Fits perfectly
cup holder broke will not flip up.
Visitor, 2004 Mercedes-Benz E320, 80,500 mi
Don't let any debris fall into the cavity the cup holder rests in. It can jam the holder. In my case, this causes the spring to break. I was able to rig it so it worked again. Later the little gear that allows smooth deployment became loose and wouldn't let the holder deploy. I had to remove the assembly, push the gear down to get the holder to extend, then put the holder back in place while already extended. When the gear finally broke completely off, the cup holder began to work properly! :)