No idea on my gas mileage yet...I'm at 300kms and its still showing over half a tank. I never trust gas gauges on new-to-me vehicles, so I plan on filling up at 500km. That should give me room enough that if the gauge is off that I won't run out first, and I can gauge if it's out to lunch by how many litres it takes to fill. Won't be until the end of next week, at the earliest, before I get to 500. It takes a while when you only do 30km a day...