On my 2007 BMW 328i convertible, I lost all of the electronics in my car while driving. The radio would come off and on, speedometer was intermitintent , door locks and windows wouldn't operate just to name a few problems. After returning home and leaving the car sit for the night, I found that the car was completely dead the next morning. After receiving a recommendation from another BMW shop that was fully booked, Bimmer Performance was able to fit me into their schedule so I had the car towed to their location. By the next day they called and e-mailed me a complete estimate of the repairs. 2 days later my 2007 BMW 328i was resurrected from the dead and was running smoother than before. Bimmer Performance Center was professional, courteous and fast with their service at a reasonable cost. I will be returning to Bimmer Performance Center for the remainder of my car service and repair needs in the future.