Check in the area where the fuel pumps are - A small hole in the high pressure feed line can make a fine mist; so alot of the fuel will get blown away, unless you are not moving, and the plastic shielding eventually fills up and leaks fuel on to the ground.
I found my leak was easy to find in the dark, using one of those high-powered spotlights (engine running).

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D