Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hi Hank, the fuel lines typically run outside the frame and are made of steel between the engine and the fuel pump package. If you have fuel dripping from the middle of the car I suspect a fuel hose has ruptured and the fuel is traveling down the outside of the steel line and dripping off of it in the area that you are seeing the leak. It's also possible that the steel fuel line has rusted through and is leaking. The car should go up on a lift for a more thorough inspection. I would not recommend that you drive the car with fuel leaking.
Let me know if you need further assistance.