Not sure I would agree with the complex electrical and computer problems, but guess it is relative to what you are comparing it to.

From a chassis standpoint, W210's have been known to develop bad:
evaporators
LCA bushings
sway bar links and bushings
blower motor regulators
window regulators
seat back hinge's
K relays (replaced the old OP)
and spring perches

Cant speak to the engine as I dont follow gassers.

As with any car, a long prior maint history is more meaningful than mileage.

*edit* 97's also had some issues with the TCU's getting wet from trans fluid too.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)