Thinking of purchasing a W124 with an M104 engine

[otto huber]

I've been looking at various cars between 1993 and 1995, models such as a E320 wagon or 300E 2.8. All of my experience these past 15 years has been with diesels, so I'm feeling a little intimidated by things like the ETA, and MB's odd approach to engine codes. I know that I should check the wiring harness before purchase, and expect to change the head gasket eventually, although I've been told that the head gasket leak on an M104 is more of a superficial oil leak unlikely to mix with the coolant.

I'm good at keeping up on maintenance and anticipating problems before they arise. So the most important question I have is how likely are these cars to leave you stranded without warning? I've read about the OVP relay failing, and I know that the alternator regulator can crap out, but would a well maintained W124 be a reliable daily driver? Thanks