I suspect that the reason your search yielded little, is that BMW usually requires that buyback customers sign a confidentiality agreement.

Yeah, I read posts on other forums that implied this. I suspect if it is taken back, all I will be able to say is "it is taken care of."

Correct, that is about all you will be able to say

Hope I don't have to wait too long before I can say it.

If the price is good and the issues are fixed I would not hesitate to buy one.
After all, if you can save a few thousand for the sake of a refurbished diff and a new airbag unit, what's the problem?
My 04 E60 had tons of issues in the beginning. All got resolved and I got more freebies than I could possibly wish for.

So you are a believer that a car can be repaired? I don't mean that in a sarcastic way. It just seems that some cars have a chain of issues almost like they were built on the wrong day of the week.

I am starting to go through a similar process to OP. Sadly BMW wasn't as much help as I hoped initially. I'm trying to figure out where I draw the line and quit fixing the car.

I am saying I don't believe a car can be jinxed. These are just technical issues.
The trick would be to give them time and get them to fix everything and get compensated (read: milk 'em for all they have to give). There is a lot they can do. An old favourite is for them to replace your runflats 3/4 worn for new ones. The dealership can claim this back if there is (or could be)excessive road noise, they just have to be willing to do you the favor.

I understand you are very disappointed though, I would be too.

I think it is a safety issue. How can I have faith in the passenger airbag/belts when they have been unable to fix the problem and are on their third attempt. What if we are traveling/out of town and it happens again. COuld it deploy incorrectly or fail to deploy when it should. I think this would meet the lemon law criteria. The leak in the front diff is unacceptable for a 30 day old car.

Any thoughts on if I should try to contact BMWUsa myself. I am hopeful that with the dealer on my side it will be resolved quickly.

Another question, how offen should I call the dealer for an update? Everyday? Every couple of days? Manager made it sound like they would receive an answer from BMW quickly.

Minnesota law requires formal notification for the Lemon Law. They recommend you contact the manufacturer and service manager. Obviously each state is different.

I called BMW to let them know what was going on and to make sure that dialog was open between them and my dealer. I just explained my expectations to them (in a very calm manner).

A documentation trail is key along with a good relationship with your dealer.