Robert 
2012 Nissan Altima Sedan 3.5 SR 4dr Sedan (3.5L 6cyl CVT)
Give me back my Honda.
 If you're considering an Altima, specifically a V6 model, check out other offerings by Honda, Toyota, Chevy, Hyundai, Ford, or even Chrysler/Dodge. I bought my Altima certified pre-owned with 16000 miles on the clock. I enjoyed and loved the car since it had every feature and option available. Well at about 18000 miles when I brought it in to the dealership for numerous rattles while driving. Not too long after that, the car started to shudder when taking off after a stop, as well as hesitating. I took it back to the dealership where they said that the transmission was defective and had to be replaced, at 20000 miles. The car seemed to drive fine for a while but then, it started getting horrible gas mileage and hesitating again along with my brake light flashing and my traction control light illuminating. Took it back again at 22500, which they said my master cylinder was bad, brake booster was bad, and the car had a bad head gasket which was causing the coolant to leak into 2 cylinders causing them to misfire. Also, it had a bad motor mount and the exhaust had a leak. They replaced and repaired everything under warranty. Drove it until about 29000 miles and the replacement transmission started to shudder and hesitate again, as well as making a loud whining noise from 3000 rpm to redline. Took it back and the dealership said the replacement transmission had an internal failure again and needed to be replaced. Now for the pros of this ultra reliable crap mobile: the seats are comfortable, the ride is pretty smooth when it wants to be, and when the car isn't having any issues, the acceleration is great. Better than any car I've owned. But I'd gladly sacrifice some features this car has to go back to my trusty V6 Accord. Too bad it can't happen, since I'm upside down on this Altima.UPDATE:The replacement tranny replaced at 29k started exhibiting the same issues as before around 33k. I decided to trade it in despite the fact it wasn't worth anything and I still owed a lot. Needless to say, I'm glad to be out of the Altima and into a Honda Accord.