[Gregg C]

Did you not get a full refund because they calculated your usage ??
I think that is incorrect, you spent your money when you made your purchase,
At that point in time I assume you had not planned on realizing any losses for some time.
Now just one year after your purchase you have a monetary loss due to no fault of your own. IMO BMW should have issued you a FULL refund.
I'm a huge BMW fan however this kind of story along with others can only do damage to BMW, whatever the dollar amount that was not refunded to you would have been cheap
PR for BMW.