the 335's have a little bit of a hesitation when taking off. Then when they do take off sometimes it feels like it really jerks or lunges. Depending on the programming level of the car if it has been updated with 29.2 or later you may feel a little bit of turbo lag. BMW modified the opening of the wastegates using software in order to prevent rattling from the turbos. This induced a small amount of lag. there is a software patch coming soon for this. Search google and you will find plenty of info on this.