This might've been posted before, but I just came across some info on the 2016 Civic.
See here:
2016 Honda Civic Sedan Press Kit - Overview - Honda News
Economy-related points mentioned:
-31/42/35 mpg with the 1.5T + CVT combo
-Electric Power Steering
-Fully belly pan
-Flush-mounted windshield
-12% reduction in CdA over outgoing Civic, Honda claims best-in-class (anyone have a number for the old Civic?)
-LED options for all exterior lighting (?)
-Weight reduction of ~75lbs
The bit that gets me is that it does 0-60 in ~6.5 seconds, which is faster than the last-generation Si model, which was rated at 22/31 mpg.
I'm somewhat curious how this motor would perform in an Insight, which weighs about 33% less and has better aerodynamics. Seems to me that 50-60mpg on the highway wouldn't be unrealistic without any eco-driving techniques, and it's conceivable that it might be a sub-10 second car.