So far I have traveled 423 kilometers in this car and filled up twice for 10 lvl (~13 liters). That's a total of 25.93 l. It works out I have averaged fuel consumption of 6.1 l/100 km (46.3 mpg UK / 38.6 mpg US). In combined cycle (50% of time city driving (with occasional traffic jam) and 50% of time highway).
The owner's manual states 4.4 liters (64.2 mpg UK / 53.4 mpg US) highway (@90 km/h) and now, when I have calculated my own consumption, I believe it's 100% true!
I think it's remarkable for a reasonably sized car like this and with nearly 300 k on the clock. And that's 14 year old technology!
Honestly, I don't understand why petrol engines are still made. They have no fundamental advantages. None.