Subtract the maximum load capacity weight from the GVWR to give the curb weight of any of the older models.

Although not a W123, my 300SDL rang up 3960 lbs of weight without a spare wheel, no luggage, and tank 90% full when last weighed. The car had no people inside it. The tag says 3950 lbs. Scale was guaranteed 98% accuracy.

So, with me in it, and a spare wheel, figure almost 4200 lbs driving weight.

New vehicle curb weight is based on this:

E320 CDI from mercedes-uk



kerb Weight: 1750 kg

Figures according to Directive 92/21/EC, version 95/48/EC (kerb weight with fuel tank 90% full, driver, 68 kg, and luggage, 7 kg) for standard-specification vehicles. Optional extras and accessories will generally increase this figure and reduce the payload capacity accordingly.