Is there a car less reliable then the X5?

[BMW X5]

forget off lease or high mileage vehicles, i posted a while back about an odd sound and was told its likely the wastegate. so i brought it back to my dealer, mind you the car was a VIP demo and has just under 7k miles. in addition to the wastegate i also mentioned that it shifts oddly between the 1st and 3rd gear. cant put my finger on 1-2 or 2-3 but just feels odd in that frame. its a 2013 with the M-perf package (3.5). long story short i dropped it off on saturday, yesterday called and asked how its hanging and was told the foreman and techs are still scratching their heads at the shifting and havent event gotten to the wastegate. moral of the story it doesnt matter how long you own one, how you treat it or how new it is, if the original product isnt well put together you end up with problems. but they are just so darned fun to drive that we like suckers keep coming back for more. its a bad marriage and we keep seeking counceling, albeit expensive one