 We bought this van used with 52,465 miles.  From the first month we have had problems.  First bad seals and now transmission issues.  It doesn't happen all of the time, but I  put the van in drive, push the accelerator and nothing happens.  The RPMs go up, but the van won't go forward.  I have had to have my van towed to the dealership twice, and of course it works fine when it gets there.  After a Google search it appears I am not the only person having this issue.  I think it is time for Nissan to step up and fix this issue. This is our main family vehicle and it is not reliable.