3.79% APR For 36 Months 3.79% Annual Percentage Rate Offer. $750 Loyalty Cash available. Qualified customers only. Available at participating BMW centers through BMW Financial Services NA, LLC. Applies only to specific models and only for specific model years. 3.79% APR for 36 months available through October 01, 2012. $29.43 per $1,000. Also available, 3.79% APR for 37-60 months. Loyalty Cash is a $750 credit against the MSRP of the final purchase, loan or lease on a 640i Coupe through October 01, 2012. $750 Loyalty Cash available for returning BMW customers only.