Net earnings/finding

Hello forum , I know that I’m going to start a wave again with the question of meaning or nonsense. I want to buy a Golf V R-Line TDI and fi nance it via VW. Price approx. 34.000€ / deposit 850€ and then the 3-way VW over 48 months. How high must my net earnings lie about ? ( I am single and have no children) Would be nice if you can throw me some facts and figures in the room, thank you !