I have been having an issue with my transmission lately. when I shift in a more aggressive manor from 1-2 and occasionally 2-3 I have been experiencing some strange things. the least concerning is the loud bang that almost resembles the issue that the ford focus st had with having bad mounts. my main concern and has been a big issue is sometimes after a hard shift ill let the clutch out and accelerate and its as though the engine has entirely shut down and wont go. twice now pulling into traffic ive had this happen and have been near rear-ended. Now I know this isn't normal driving but it worries me that if I may need the power there in an emergency it wont be. Ive been to the shop already to see if there was anything they could find wrong. the first time I took it was about 11 months into owning it and to my surprise (sarcasm) they could not reproduce the problem. they insisted nothing was wrong and it must be my driving... anyways some background. the car is a 2013 ford focus se black 201a manual transmission with premium wheels and Tuscany interior. I had purchased it back in june of 2013 and to this day only have 15k miles on it (not my only car). anyways if anyone has any in-site on what could be the problem or have experienced anything similar id love to hear what you guys all think.