Consumption way too high

Hello have me before 2,5 mon. a Ka Futura BJ:2001 bought 60 HP and 1299 ccm. Drives suuper and I am very satisfied with it. But…. The Ka eats my hair from the head The Ka needs about 10l/100km, inside places That can’t be. And I’m really not a “Heizer” Is this normal? Or what can this lie on? I am grateful for every tip/ advice. P.S. Otherwise the Ka makes a lot of fun (must stay financially possible) cu Pickmueck