I really don't understand the great disparity there seems to be on this. I realize a lot of factors come into play like auto vs. manual, srt vs. limited, hwy vs. city, etc..... but I see people here with almost the same car as mine, yet with better mpg's. I don't get it.

Since day one (2.5 years ago) I've averaged about 20 mpg on almost every tankful..... daily driver, autostick, around town less than 20 miles a day, with or without a/c, assertive but not aggressive driver.

If I use half a tank on the highway, I get about 23 on that tankful.