One problem related to transmission not engage has been reported for the 2011 Nissan Altima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Nissan Altima based on all problems reported for the 2011 Altima.
In January 2018, I took my Nissan Altima to a nearby authorized Nissan dealer explaining that the car was not accelerating after stopping. When depressing the gas pedal, the car engine would not immediately engage and would stay idle until seconds passed to which point the car would accelerate to the speed limit whil driving on interstates and local roads. The Nissan dealer (porter Nissan in newark DE) indicated the despite my having brought the car in for service regularly (most recently in Dec. 2017 and July 2017) they indicated previous diagnostic tests had not found that my transmission was in need of repairs. They indicated that the repair cost would exceed $5,000 which is clearly a result of a defective manufacturing process given my car has under 85,000 miles. My extended warranty expired and so. I contacted Nissan directly and reported the concern and they have opened a case number but haven't heard back from them. I've done research online and it appears Nissan has been subjected to federal law suits stemming from transmissions difficulties and in response extended the warranty from 100k to 120 miles for Nissan Altimas manufactured between 2003-2010. Therefore, I am reporting these concerns to your organization and would respectfully request your guidance on next steps.