I want to meet the guy that gets 20+ mpg. I have never gotten over 16 mpg. I have a performance programmer, but it did not change fuel economy. I average 12 mpg in the summer mixed driving and under 10 in the winter. It has 140,000 miles and has never worked a day in its life. It is a 2wd. I bought it with 125,000 miles. It was driven by a female tax accountant before I got it. I would gladly take any advice.