I have now had 15 fill-ups, or so Fuelly thinks. My worst tank was #2, just below 40 mpg, because I had driven it normally and it was cold and there was some snow. Lately, I have been getting in excess of 50 mpg because I shamelessly do 65 mph on a 70 mph interstate, try to keep the ECO indicator inside the Mountain Dew-green range, and the weather is excellent for priusing and for life in general. Once it gets really hot, I assume the AC will eat into the mpg like nobody's business.