Purchase of a new Forester

Hello, after a long search as if by chance discovered a forester! I liked the car immediately! Now my question: Who bought a forester with free gas system the last time? How much kg of gas does the forester need? Does all this run around, or is there problems? How much discount do you get from Subaru? Which dealer is to be recommended? For a reasonable price I would like to make a trip Thank you!