New car with several incidences when traveling at low speeds and needing to stop the vehicle the breaks felt sluggish, the vehicle would not stop where i intended, and it made sounds. i went to several nissan dealerships and they each told me the break system was ok and i just needed to get the feel of a nissan sentra. i told them that was not the case because i owned several nissan sentras. they said there was nothing they could do. i increased my stopping distance because i didn't trust the car. i got into a minor fender bender. the car in front of me only had a small scratch. i was going at low speeds when the car in front of me stopped. under normal conditions i had plenty of room to stop. however, my car didn't behave normally. i hit the break as hard as i could, but it was sluggish and still moving. the front-end emergency breaking system started beeping. i couldn't swerve the car because there where cars on my sides. i continued hitting the break as hard as i could, and my system beeped and flashed again. the system couldn't fully stop the car either. before moving my car i called the nissan number the manual says to call. i told them what happened and asked them to get the event data recorder information. they told me to bring it to a dealership. the dealership said they only downloaded codes and what i was describing was the transmission and after looking into it they decided they would replace a valve in the transmission under warranty. they said that a part also needed replacing because of the accident. they said the part was on backorder. i asked for documentation of what they were going to do to my car and they refused and said i would get it at the end. now the part is further backordered. they won't pay for a rental and are now saying that if i want out of my lease they need to do an 8 week investigation. i wanted the investigation over 2 months ago!