Here is my story. Wife wanted to try a new restaurant. She said it was 37 miles away. I thought, 74 miles round trip, the Focus can do that.
Problem 1: When I put the destination in the Nav, the restaurant was actually 40 miles away. Surplus listed the round trip at +3, not good. But we were already on our way.
Problem 2: It was hot, so I ran the AC on the way to dinner.
Problem 3: Mostly 65mph Highway to and from.
Problem 4 (kinda): Restaurant is a 300 foot elevation climb from my house.
Reached restaurant with 48% battery left. I was confident I could make it home. I knew that I would not need the AC on the way home AND I knew it was downhill (elevation wise) so ...
BARELY made it home. Got the battery depleted message about 1000 feet from my home, but it was downhill from there. Here is what the car reported when I got parked in the garage:
Trip log said I used 10.2 kWh on 40.9 miles getting there (251 Wh/mi) and 8.8 kWh on 39.8 getting home (223 Wh/mi), 19 kWh total on 80.7 miles (~235 Wh/mi). My JuiceBox said I used 23.11 kWh to fully charge the car (~82% efficient, not bad).