too high fuel consumption at Ford Ka

Hello…I’d like to know what your Ford Ka is using!!!!…So I’m refueling at 450 km…so more Aootobahn…at 130..!the year of construction 2000….had previously used up a Opel Kadett Kombi which was less used even though the year of construction 89 was…how is it????…so my question…what do your so..and how can I possibly save fuel?