Chuck Corley 
2013 Nissan Altima Sedan 2.5 SL 4dr Sedan w/Prod. End 11/12 (2.5L 4cyl CVT)
Great Car Except for Transmission Rumble
 We purchased the 2013 Altima new and kept it for 50,000 miles and 5-years. The car was very comfortable, drove well, and had plenty of power for a 4-cylinder engine. Fuel mileage was excellent. Highway driving mileage averaged between 32 to 40 MPG depending on the wind direction. The only big problem we had with the car was the CVT transmission noise and rumble. It was worse in cold weather, but was always there. It was actually embarrassing to drive with a friend in the car the transmission noise. It made you feel the drivetrain was about to fall out of the car. The dealer replaced the alternator under warranty once and the noise got better for a while, but came back after six-months. This would have been one of my all-time favorite cars if the CVT transmission was quiet and vibration free!  The dealer refused to fix it and said it was normal. That was laughable.