Yeah, last summer I ran the ac with eco mode, but this summer the heat is really getting to me, so I've had to shut off eco mode so the ac stays on at lights. I set it to low with the fan all the way up. On my commute to work with no ac and the windows down, I can get 60 mpg (about 20 miles, mostly flat or downhill), and on return somewhere around 50 if the traffic isn't too bad. Now I'm getting like 45 in and 40 back with my excessive ac usage