general problems of the 2011 BMW 135

When moving slowly and then rapidly accelerating, such as when attempting to turn onto a busy road, the car seems to shut off the fuel for a solid 2 seconds, so the car actually slows rather than speeds up. The driver, when trying to turn in traffic, will panic and press harder on the gas and nothing will happen until the 2 seconds is over, and then the car suddenly takes off into traffic. This happens consistently and is dangerous when trying to merge in traffic. BMW has attempted to fix it unsuccessfully and now says it is "normal functionality of the gearbox and nothing can be done to remove this sensation". This car has the dual clutch transmission (dct).