One other item of caution: I have heard that people have gotten bitten by an issue concerning the date the vehicle was put into service. I guess the clock on the warranty starts at that point as opposed to some other date. I can't remember the specifics but you might want to look into it since a pre-owned car from a non-BMW dealer might not have good records.

Disclaimer: My memory is going and I might be totally off on this.

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