The 124 E-class can be a fine car. It it important to find one which has the known gremlins already addressed. For a late model year (93-95) with the m104 engine, that means the head gasket and wiring harness. Bonus if the radiator is new and the a/c evaporator is solid. (My 1993 has had one small a/c repair since new - replacing a leaking expansion valve. Still works great.)

Have you considered a 202 C class? They have a good reputation for reliability and longevity. The M111 four cylinder is reliable and reasonably frugal. Not sure what the market price range runs for these.

- JimY