Well, average is up to a whopping 15.2 mpg, but I have been playing a little more than before. I know you guys will call bs, but the xfire ran doorhandle to doorhandle from 40 to 100mph with a Cadillac CTS-V on Monday. True story! I wanted to see the Caddy run and figured he would tear away but he didnt. He even had aftermarket exhaust on it. Needless to say, I was more than elated. Of course, he started pulling better at 100+ and would have killed me on top.