Is the fuel pump behind the left rear wheel on this model? It is on many of the models, and could be a leak from the pump or any of the fuel lines going to/from the pump.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.