Hello, have a little dillema. Would you like to buy me a new car and have no idea which one. In question come Audi S6 Avant Bj2006, BMW750i 2006, Mercedes S500 2007. What would you advise me. Would you like to make the car later on LPG. It is very important to me that the car is reliable and in any case a few hundred thousand km. For poor tips I would be very grateful to you Gruesse quakex