Whohoo! Yesterday was the one year anniversary of my Prius. Total cost of fuel: $822.69 Total cost of maintenance is $74.85 Total amount of fuel used: 949.277 litres Total kilometrage: 18870.5km Lifetime Average: 5.0L/100km or 47mpg US or 56.4mpg Imp. or 20km/L I'm still lovin' it!