When I drive mine on a daily bases it's usually about 22 miles a day in total. I hit the interstate and drive 6 or 7 miles at 65 to 70mph, sometimes I hit 85mph or so, then I turn off back to city driving, where I put another 4 miles in the city. I get about 23 miles per gallon by the way I drive. I use the most gas up in the city on those rabbit take offs at the lights, because that's when most people are checking the car out and wondering if it runs. ( I'm like, "Sure man, Zooo-o-o-o-m-m-m." I like doing that! ) Last road trip I took, which was about 135 miles round trip, driving at speeds from 60 to 70mph I got about 26 mpg. I have just installed K&N 33-2290 air filters and hope it performs better.