my new c70 and its faults 🙁

Hi to all unfortunately I no longer had time to write here since my new c70 was finally there. he has now almost 9oo km on the clock after 5 weeks and was gently drive in, heist I come with 62 liter ultimate super proud 750 km far ! the consumption of my c70 is below that of the small c30 with 170 ps !I have 140 hp. c30 ha ? yes I have to drive a c30 at the time of volvo ,unfortunately !Why ? the car I got on 11 september it had no processing defects at first Look! unfortunately only on the 2nd! 1. The driver’s door grinds a little bit on the rubber when making (hangs ).The passenger’s door doesn’t do that at all .and closes clean. 2. the love aux !if I don’t have an mp3 player or psp clasp I have a nice surrending noise on my boxes from aux (it’s no cable in aux) nevertheless this surren.if I close everything I still hear it !just because I like to listen to loud music with this super system (premium sound). I also have this surren. the cable from the mp3 plate, no improvement !( ps : the c30 has also aux and the same problem ! my08 ! 3. my phone in the car which is a fixture of volvo also has the nice buzzing in the phone ear ! (you can hear it when you go on aux and the loudness turns up. no cable in the aux plug in!then it is audible loud.with cable and mp3 player it is also audible.) this week Monday I then brought the car back and told my friend that he was only w I need to report to me if the problem has been fixed with the aux! I am mad at the volvo in sweden the problem! but nothing can do (can) ? otherwise the car is my dreams .and there are no faults so far. I feel in berlin almost as if the c 70 is threatened with extinction ,I just don’t see any ! Only on the highway 1 times from berlin to Heilbronn near leipzig. Please write me if you have such problems with your aux connection . your c70v Loved