How can I improve my Mercedes suspension

[krissy boy]

My C Class Merc (new) drives like a boat on high seas - can I upgrade to stiffer suspension?

[slimjim]

If it is a brand-new car, you should go back to the dealer. M-B dealers are usually very good and they should listen to your problem and suggest options. AMG are an M-B approved firm for modifications like suspension, engines, bodywork, etc. You can get AMG work done via your dealer but it will not be cheap. At this stage, don't consider going elsewhere to try and get it sorted as you could invalidate your warranty (not a good idea on a new Merc).