1.6 GDI Oil consumption

Hello, it’s about the Hyundai of my sister. The car ran about 120,000km. It’s the 1.6 GDI, unfortunately the oil consumption is too high in my opinion. On about 900-1000 kilometers the oil level drops from maximum to minimum. Noteworthy for extreme short distance (3x daily approx. 3 kilometers) I was with the car a week ago in Croatia, before I did an oil change with the filter with the Motul 5w40 Xcess to see if something changes. (The contract factory sta.) dt always fills 5w-30). Result: after 2600 kilometers the oil level is close to minimum. The cooling water is clean, there is no blue smoke from the exhaust. I have read that the problem with the engine is known, is that true? Is there a defect or is it so ok? Thank you in advance.