I don't think it will harm the suspension on your Benz.
I can't see what kind of tires and rims you have from the rear. Is this a low profile tire where you might scratch the sides of the rims when driving up the curb? Just don't approach that curb at an almost parallel angle, I guess, to avoid that. I'm sure those rims are pricey.
Just google your municipal code wherever you are. Where I live, I see two laws that could apply in this situation.
You would need to get off the curb, and just keep your wheels within 12 inches of the face of the curb.
Sec. 70-196. - General parking on public streets.
No person shall park or stand a vehicle in a public roadway other than parallel with the edge of the roadway headed in the direction of lawful traffic movement and with the wheels of the vehicle within 12 inches of the face of the curb or edge of the roadway, displaying a valid license plate, except as otherwise provided in this chapter.
You need there to be at least 16 feet of roadway between your car and the opposite curb so traffic can move through.
Sec. 70-197. - Parking prohibited in specific places.
(a)No person shall stop, stand or park a vehicle:
(12)On any public street in such a manner or under such conditions as to leave available less than 16 feet of the width of the roadway for the free movement of vehicular traffic and emergency vehicle response; or
Municipal Code
People don't normally park like that on my street. But it happens when someone is throwing a party, or maybe some lawn mowing crew stops to work on somebody's yard. I have never heard of anyone being ticketed for that in my neighborhood.