Front Seat Heater/cooler problems of the 2006 BMW 5 Series

I bought the car it had an oil leak, radiator leak, developed an air bag malfunction, the engine stopped running, tar is accumulating on top of the sunroof every time I open it, the heater fan makes noise, the transmission makes noise after four attempts it is still leaking oil. All of my friends who own BMW's have also had air bag malfunctions. None were part of the recall, all paid $1,300. 00 to have it fixed. BMW should have recalled all of them. The purpose of recalling some is to avoid a total recall. They are building their cars with inferior parts so that they do not last for more than 60,0000 before major problems occur. One of my friends has spent over $10,000 on repairs to his 2004 x3.