it seems like even though i top off the tank, the gas needle doesnt quite reach the 1/1 mark, but sits below that. also when i fill up when the needle is almost at the bottom i can never fill more than 18 gal, telling me that the gas gauge isnt quite normal.
not a big deal b/c i can live with it, but is this a common problem? i'm guessing there is no easy fix.

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Current cars:
2001 MB E55 AMG
2003 Honda S2000
2000 Honda CRV

Gone but not forgotten:
2004 BMW 325i 5sp sport
1999 BMW 540i sport
1997 MB E420
1995 BMW M3 coupe

welcome to owning a Mercedes. I replace fuel sending units almost daily on MB's to correct the inaccurate gauge readings...but get it checked before replacing the sending unit just to be sure.
Dave

Have you driven a Ford lately ?

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2007 C 230 Sport.

thanks.. how much is the fuel sending unit, and how hard is the install?

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Current cars:
2001 MB E55 AMG
2003 Honda S2000
2000 Honda CRV

Gone but not forgotten:
2004 BMW 325i 5sp sport
1999 BMW 540i sport
1997 MB E420
1995 BMW M3 coupe

my 90 560sel does the same thing. I got it to 1/1 filling it slowley with the engine on. don't recommend it. Ive checked the gage and it is fine. either the tank isn't loosing bubbles and the pump shuts off fom back pressure or the sender is off. Try filling it and wainting a few minutes: 2 or 3 like get acar wash. Then try topping it slowly. thats a whole lot cheaper that replacing the sender.

The part is about $160.00 from MB and is very easy to install.
Dave