NHTSA Complaint #11499304 — 2016 NISSAN ALTIMA

My car has several problems with accelerating either during highway speeds or from a dead stop. First , the car starts fine and engine runs fine, does not idle rough or stall out. The problems arise after driving for a few miles and I come to a complete stop, either at a stop light or sign. When the light turns green and I attempt to move the car, there is a severe lag in response to get the car moving. When it does start moving (after about 5-6 seconds), it barely rolls forward at less than 1 mile an hour. It does not matter how many times I depress the gas pedal, or if I have it to the floor, the car barely moves without any sound or rise in RPMs. The car may cover a distance from 15 feet to 150 feet at this snail pace until suddenly the RPMs shoot up to 4-5000 and the vehicle takes off like a rocket. The first time this happened I was making a lefthand turn and while sitting in the turn pocket I pressed the accelerator and the car started to creep along and put me right in the way of oncoming traffic which luckily slowed down for me to crawl across. The next time it happened was when I left a stoplight and the car started crawling then suddenly shot off and almost hit the car in front of me which had slowed down for a dip about 30 feet from the stop light. BOTH VERY DANGEROUS SITUATIONS. The car also tends to lose acceleration while driving at highway speeds with the RPMs dropping approximately 1000 RPMs as when crossing intersections leaving me to crawl through a long intersection while now with cross traffic on the green light. This happens during freeway speeds as well. Also, at freeway speeds the car will top out at 40 MPH with the RPMs winding away at 4-5,000 RPMs while traffic is flying by me at 65-75 MPH. All these scenarios are prime conditions for an accident or collision. Symptoms first appeared about two months ago, now daily. The Nissan Dealer refuses to do transmission repair saying the computer throws no codes. Will not take my word on the problems.