Ah, my car (which still had new car smell and about 500 miles when I got it) averaged 18.4 mpg in mostly freeway (with some city) driving. That is pathetic no matter how you look at it. I don't care about engine size. I care that this is 2011 and gas is $4 a gallon and automakers in Detroit still haven't gotten the fact they need to have cars that get some serious MPG.
I liked the car. Rode well (although it didn't seem to be that powerful). Had lots of kewl features. ... But after 10 days I replaced it with a Nissan because the gas was costing far more than the rental.
FWIW, I have owned nothing but Mercedes and Honda vehicles for the last decade and they all have done considerably better on miles. Both my current vehicles are 4-cylinder (Benz supercharged) and both average about 25 mixed city/highway and 28-32 highway ... and I am not that happy with those numbers, but not in the market to replace them just yet.
But no justifying companies acting like it is 1994.
A day without pith is a day in the pits, I say.