Originally Posted by zip439

Are you miscalculating Liters vice Gallons?? Here in the USA measuring gallons with a Crossfire Limited we get about 30 miles to a gallon driving on open highways and about 28 MPG in the city. If you brake that down in a conversions to liters 30 / 3.7854 = 7.925 and 28 / 3.7854 = 7.4 Plus your distance is measured kilometers vice miles.
I do not think a Crossfire would even run on mileage that you are getting unless the fuel was leaking out of the system, because the engine fuel ratio would be too too rich for ignition.