I recently purchased a 1998 BMW Z3 from this dealership. The car had not been detailed when I drove it off the lot and they inspected the car when it should not have passed inspection. My mechanic later told me it looked as though it had been in a accident at some time even though the carfax report showed a 'no accident' history. My mechanic also told me the oil had not even been changed recently even though the service department at Highline assured me the oil had been changed right before I drove the car off the lot. Additionally after washing the car I realized that the trunk leaked water around the high mounted brake light. I took the car back to them twice and they assured me they fixed the problem although it was evident to me that THEY DID ABSOLUTELY NOTHING about it. I would never recommend buying a car from these guys, and I DEFINITELY WOULD NOT TRUST THEIR SERVICE DEPARTMENT TO DO ANY WORK ON MY CAR.
do yourself a favor and stay away from these guys.