I'm not quite sure how to respond to that, considering I'm barely holding on to 44mpg according to my readout, which doesn't appear to have the software bug. I think I'm babying the thing, and it seems that if I just look at the accelerator wrong, my mpgs drop. I'm assuming you have the same reformulated gas as we do in Houston, so I'm not going to blame the gas. I have my tires pumped to max (40psi). I'd blame the cold, but it doesn't get below 45F in the mornings and it's up to the 70s during the day.
If you consider 54.9mpg disappointing, then I should shove a couple sticks of dynamite in my car's tailpipe and blow the thing up
In all seriousness, congrats on your numbers! I'm going to soak my seething envy in a beer
Jeff