My driving with the Saturn VUE Green Line, after some break-in miles, is averaging just about 30 mpg . My fill-up this morning was 29.7 mpg over about 310 miles. The tank before that was a hair above 30 mpg. My driving is mostly suburban stop and go, side road cruising, and a bit of high congestion traffic during rush hour. I try to keep my highway speeds in the low 70's. I usually leave my AC off, but defog seems to run the AC anyway.