I just drove from San Diego California to Norfolk Virginia and avaraged 33 miles per gallon. This is with the tires at max psi, 2 people (driver included) and the back full of electronics and personal stuff to thee point that I would bottom out on the smallest bumps. 75mph was the avarage speed. Thats alot better than the 11mpg I get in the city. Oh, and no engine mods at the time. I'm impressed my new SVTF!