My 2017 is doing the exact same thing. I mentioned it to the dealer on my 16000km oil change. They told me to keep an eye on it. If it kept using lots of oil they were gona look into it. Still 2000km to go before my next service... All ready added 2 litres. Ill be dropping it off in the new year.
My old car had 400000km on it. I nearly never had to add any oil to it.