since we had this van I have checked the mpg most times on fill up , and found whatever I did , up mountains , doddleing about, 80 mph on mways, whatever, it was always between 26 and 28 , well on this last trip to France I kept a check on mpg and it was almost uncanny because it just happened 3 times we got to filling stations exactly on 400 miles and put in 60 lts every time which in my calculations comes out at a smidgen over 30 mpg, never gone over 380 miles before needing to fill up ,before we went we changed the oil and fan belt , so don't know if it is different oil or something , otherwise just can't explain it.