My car got 61000 Km on it and I found water drip (no oil trace) under car after running. It comes from behind the engine (may be between the tranny and engine). It lasts for around 20 minutes and stop, the amount of water is like half of a cup. It happens all the times (since 4 months ago) but i found no water leakage from the radiator and no problem for daily driving at all. Anyone has any idea on this problem?

Condensation from the AC.

W210 have been noted for clogged up HVAC air intakes at base of windshield.

Tree leaves, etc.

Might be a good idea to vacuum it all out, push it out with pressurized water, etc.

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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles

Thanks guys for the info and great suggestion.