 I bought the 2013 Pathfinder SL on 11/26/2012. I started experiencing the knocking sound when accelerate the vehicle. I took it in to service, but the Technician could not hear it very well because it was snowy day with road noise. He told me to take it back at another time. I am planning to take it in again on my first oil change. It has about 1700 miles on it now. The car already had the Transmission Control Module re-programmed. I traded my 2011 Altima to Toyota and traded my 2011 Quest for this new Pathfinder I thought I gave Nissan another chance, but so far very disappointed. If they can't get rid of the knocking sound, I will get rid of the car in 2 years or before it's out of warranty and of course NO MORE NISSAN.