So, I drove for a week with the Eco cruise turned on. I gotta say...I am not a fan. Rarely could I get over 40mpg on a trip when before I had been consistently beating the 47mpg rating. I drove a mix of highway and city. It seemed like it took longer to get up to speed and wouldn't go into EV mode very often.
Turned Eco cruise off a couple of days ago and I am back up to 45 mpg on alot of trips and some I'm getting more than that.
Before, if I really didn't pay attention to the EV mode and just drove the car, I would get 35mpg. Today, on my way to work I got 38mpg.
Also, something else I have noticed is that I drive better wearing a thinner soled shoe vs. something like tennis shoes. When I can actually feel the gas pedal, I seem to drive better.