i get about 500 miles out of a tank but thats a real variation of driving, i work about 2 miles from where i live, so that will drain my fuel stop starting, but then i travel 145 miles to see my bf every other weekend, so thats mainly m1 miles, generally do about 80mph, and get 54-55 mpg... then my bf drives it and all my hard work of getting the mpg up is ruined