 I owned a 2011 Sentra and although I didn't find it very comfortable I was happy with the way it drove so I decided to upgrade to a 2017 SV Sentra.  Although I am happy with all the new safety features such as the backup camera and blind spot warning lights I am really sorry I bought this car because of the transmission and acceleration.  It seems they "improved" the CVT transmission in 2012 and now the car is very slow and unresponsive compared to the 2011.  On long trips my leg hurts because I'm having to push so hard on the gas peddle to get it to respond and it is very dangerous merging and passing.  Also the cruise control doesn't work on even small hills which is very annoying.  As soon as I pay down my loan I will be looking around for a better, safer car.