Never had less than 500 on my old trafic, once got more than 600, thats with 650 tank 2 ladders and full rack. New vivaro only had 3 tanks of juice through and 540 ish with no rack but 650 tank in back. computer in van says gonna get 700 plus. yeh, then it goes into the red at 500 ish, must be a big reserve tank to do more than 200 miles, not willing to risk it..