I get 40 mpg in the highway going 70-80 mph and 15-20 mpg in the city like New York with alot of stop and go. When I am going about 50-60 mph I get around 50 mpg! And in a town like Kingston where I can drive 20-35 mph in I get 20-25 mpg. Just the other day I went 84.5 miles with 1.687 galleons of gas. I got blueprints for a device that says it will increase MPG by 40%, when I find the time to try it out I will tell of the results, I hope it does work.