Check Engine Light On problems of the 2011 BMW 550

I have prepared a pdf document that I would like to submit as well. I can supply it at any time. Here is the short version. 10/17/I have the family come with me for a ride and then the vehicle begins to malfunctions and the check engine light comes back on. The vehicle is struggling to even drive at this point and I am on the freeway trying to make it to an exit. The hesitation becomes worse and worse I start to fear that I may become stranded on a busy roadway. I make it off the exit and home. 10/18/(d/o vehicle mileage: 29,375) I take the vehicle to concord BMW for inspection; [xxx] is the service consultant at BMW of concord. 10/19/(p/u vehicle mileage: 29,379) [xxx] telephones me to inform me that it was a quick fix and the vehicle was ready to be picked up. I come to sign for the vehicle and release the rental. Not even 10 minutes after I am in possession of the vehicle it malfunctions identically again. I call back to tell them I am dropping it off, once again. Returned the vehicle with (d/o 29,392 miles) 10/20/continued. . . 10/21/continued. . . 10/22/continued. . . 10/23/continued. . . 10/24/continued. . . . 10/25/continued. . . 10/26/continued. . . 10/27/continued. . . 10/28/continued. . . 10/29/continued. . . 10/30/continued. . . 10/31/continued. . . Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).