How can we figure out load capacity?

GVWR minus vehicle curb weight? Curb weight varies a lot with options. How can we know it?

On my car, payload is printed on B pillar. These days however, payload does not seem to be printed on B pillar.

__________________
1992 300D 2.5 turbo diesel. 319 k miles.
124.128 chassis, 602.962 engine, 722.418 tranny.

"Gross Vehicle Weight Rating" possibly?

On some cars its in the manual, the load capacity.

BTW kinda funny seeing daimler "CHRYSLER" AG STUTTGART aint it?

Yes, GVWR minus curb weight. The best way to get your curb weight is to load the vehicle with a normal load (full tank of fuel, normal passenger complement, etc) and get the vehicle weighed. I don't believe that CAT scales have a problem with pickup trucks, although I don't know what they'd say about a passenger car.

And, yes, GVWR means "Gross Vehicle Weight Rating". It's based on what the springs, and more importantly the brakes, can handle.