Had 2012 Impreza for 5.5 years.
THings to know:
Want accel? Use the flappy paddles! Upshift just before redline. This will reduce 0-60 by 1 second (well, in my car it did).
CVT sucks gas when cold. Combine trips.
MPG will drop drastically after ~60 mph. If you care, drive slower. Absolutely accel as gently as possible if you want to hypermile. Coast to all stop signs. I had 2 high tanks of 38.? MPG in summer this way. Two lane blacktop, 14 stops, 40 miles one-way.
If you hit a cat, the bumper can be heat-gunned from behind, and just push out the dent. Even a year later!