This issue was brought up several times in the 'News and Rumors' section under the 2012 Impreza thread. With that thread hitting its limit...
Several people have reported that they occasionally experience a car that is hard to start, or cranks hard, or simply fails to start the first time.
I have had this happen to me 4 times now, I took delivery on it December 31st. 2 times for me were at home, car cold, 2 were at work on the weekends after the car had sat for ~2-3 hours after being warm. Only one time was in "winter" cold of <20 degrees F.
The only other threads relating to hard starting are from 2002 or older...hopefully this is the correct place to post this.
I'll include all details that have electrical/mechanical bearing on the car.
2012 Impreza Premium + CVT, All-Weather Package, Fog Lights