Re: 2014 GC gas mileage 3.6L
I have ~3,000 miles on my '14 V6 Limited 4x4 and I'm averaging 15.7 mpg with mostly city driving (manually calculated, not per EVIC). I'm in Los Angeles, so even the highways are a bit stop and go at times, plus I'm probably on the more aggressive end of the spectrum.
The longest trip I've taken so far was 150 miles each way, and I'm guessing I averaged ~21-22 mpg on that trip.
I've also noticed my mileage improving as I rack up more miles on the car. My average mpg is probably up 1 - 1.5 mpg since my first tank.
Soon: 2014 GC V6 Limited, Granite Crystal w/ Beige interior, ORA I, RA4, Lux Pkg, Tow Pkg
Day job: Corporate Strategy for a consumer products company