it mainly depends on how u drive re: shocking economy
i've had as low as 250 on a tank
usual city driving, i see 320ish before it gets too close to E
highway, over 400+
but at the end of the day, i'd rather drive the car the way i want, and spend a few more $$ on fuel. who gives a shit, u dont buy a skyline for economy, or if u do, u wont enjoy it.