Sudden acceleration - on two occasions (June 12 and 27, 2016), while slowing and coming to a stop (once to park and once to stop at a red light behind another vehicle), the car bucked and revved and was incredibly hard to control, lurching forward. On the first occasion it lurched forward at a high rate of force and hit a fence as I was pulling in slowly to park - I could not control it with the brake until I put it in reverse; on second occasion (2 weeks later), I was on a city street slowing to 5mph and stopping at a red light and suddenly while I was full foot on brake the car was revving and bucking and I could not control it until I threw it into park. Foot hard on the brake the whole time. Both times driving completely straight and very slowly into the stop. The car has less than 1500 miles on it. It is an automatic transmission, with various transmission styles - the first time it was in "sport" transmission; the second it was in the default ("custom"). on June 28, I took it to the BMW dealer. They have now had it nearly 3 weeks and have not told me anything, other than that the software is being analyzed in germany and someone from BMW na now has my file.

- San Francisco, CA, USA