I moved into this vehicle from a 6 series and absolutely love it. The 6 is a great car and is a lot of fun so moving to a SAC somewhat scared me but the X6 is awesome. I purchased the performance package so my X6 has an extra 40 horses and it makes the car even more of a beast. I would highly recommend this car to anyone that loves to drive and demands performance from the car.
I purchase this car used, and she was beautiful. However she came with a list of problems that cost more to repair than the car was worth. It started with a smell of fumes coming into the cabin of the car, I brought the car to New Country BMW dealer a number of times to try to get a confirmation of what was wrong with the car and was told antifreeze was leaking and possibly a leaking cylinder head gasket. Because the dealer could not confirm the leaking gasket, I brought the car to a garage that specializes in foreign cars which gave me a quote of $10,000 to replace leaking Valve Seals, and noted that once they opened the engine they could find additional leaks. I went back to New Country BMW and explained to them the diagnostic I received, and was told yes these cars are known for leaking valve seals and there is a possibly that the cylinder head gaskets need to be replaced also for an additional $10,000 and $4,000 for the leaking antifreeze repair. Yes, I brought the car used, but who would think with the original price BMW charges for these vehicles that the engine would get more than 100,000. I have driven Infiniti's for far over $150,000 miles..
The sound system has started to going off in my car since last 2 months (in the beginning was intermittent but now a day happens so often). I bought my X6 in January and up to ~June I didn't have sound problem. But then later sound started going off (no sound for radio/cd, Reverse-alert, SOS, etc). Sometime restarting the Engine was helpful but not always. BMW Service told me because I had setup the bluetooth with blackberry which has an old version. But even after deleting the blackberry from the phone list and keeping the phone off when in my car I saw sound going off again. I am putting for my car at BMW for second time. I hope they will be able to fix it. I paid $87,000 for this car!
I first had a 325CI and that was my first BMW and I loved it, heck I still do, Its a great driving machine. But as I've gotten older, I wanted to upgrade and I thought driving a 6- series was going to be that upgrade that i needed. I saw the X6 and asked to test drive it, and well it was just what i was looking for, not as big as a true SUV but sits up high and larger, while maintaining a 'cool,sporty-look'. I immed. started negotiations, and wrapped e-thing up in about two-three hours. And I can't get enough of driving it!