To sum it all up in one word is impossible. MB Automotive Services in Rockville, MD is the ABSOLUTE best service center to take your BMW for servicing, repair work, and/or preventive maintenance. Patrick and "the Gang" are very courteous, they explain the issue(s) to my understanding, and they are efficient. My car is always completed when they say it will be ready and my car is never just "sitting" around. If I could give more stars, I would. They have been servicing my vehicle for the past 5 years and I will continue to go there. Try them, you will like them and you will not be disappointed.