There have been no recalls for the 2013 Nissan Sentra CVT. However, there have been several technical service bulletins (TSBs) issued for issues with the CVT transmission. The most common TSB is for a judder or shudder feeling when accelerating from a stop. This can be caused by a build-up of debris on the transmission's speed sensor. Other TSBs relate to transmission fluid leaks and premature wear of the CVT belt. If you are experiencing any problems with your 2013 Sentra CVT, it's best to take it to a qualified mechanic or Nissan dealership for diagnosis and repair.