Is konia the accusative of kon? Thanks
It is as well, but here it is Genitive, as needed by "potrzebować".
Nie, dziękuję. Mam już samochód.
Dude, choose 2 answers
Could I add a "czy" at the beginning and still be correct?
Yes, any Yes/No question will be correct if you start with 'czy'.
There must be a mistake with this as i cannot progress despite choosing any of the 3 answers.
where is the asking word CZY? A bit strange
As a question marker, czy is optional.