Just off the trip computer. However, it seems pretty accurate. It was also a very easy run. The car is only doing about 1500-1600 rpm on a flat road at a constant speed. The usual use sees about 10-12 l / 100 km. I think that's still fantastic as that includes a lot of commuting to the city in heavy traffic. I have had smaller cars , recent model Volvos....don't laugh, and they were barely any better. A friend has a C200 Mercedes that uses more fuel and is woefully boring to drive. It's a pity that Australians haven't woken up to how good our local cars have become.