Lately, I have been getting horrible mpg with my E420. I was used to 23 and on occasion even 24mpg. Now, I think I am lucky, if I get 15 or 16.
The difference between now and then, are a Rebuilt ETA, a rebuilt MAF (two, actually - the first one gave me a high/low voltage code), new O2 sensor, new plugs, caps and rotors.
My tech whom installed the O2 sensor (that thing is a pita to get to), said he took some air flow readings, and he thought they were high (20-21kg/hr) and thinks it ought to be more like 14.5/hr.
Does this point to another MAF? No CEL is present.

Thanks!

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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