Hydraulics going bad? Weak Clutch?

In 533,000 miles, my 240D has had front calipers rebuilt once, master cylinder replaced once and both clutch cylinders rebuilt once each. I wouldn't exactly call this maintenance schedule evidence of bad hydraulics. It is very simple and inexpensive to flush hydraulic fluid annually. If you do this your hydraulics will be almost completely trouble free.

In the same 533,000 miles I have put in the third clutch. I wouldn't call this evidence of a weak clutch. If the car is driven properly, clutches will not require replacement any more often than any other car.

The achilles heel of these cars is the climate control if it has one. Most 240D's have manual a/c controls which are virtually trouble free and the steering box which will often get slack. I can't think of any other significant weak points of a properly maintained and properly driven 240D. As said earlier, they are simple and bullet proof. From a reliability and longevity standpoint, they may be the best car ever built IMHO.

Good luck,