2013 Nissan Altima 3.5 SL 4dr Sedan (3.5L 6cyl CVT)
Great MPG highway. On a recent trip from D.C. to NJ I got 34.2 round trip.
Short, slow(city), and hilly driving is another story. That kind brings MPG way down.
The car does have a kind of 'groan' while accelerating or maintaining low-medium speed but I don't find it bothersome. Otherwise it's quiet.
The CVT is awesome in Ds mode. Very nice acceleration.
I have tehe heated seat issue where you get heat either at bottom cushion or the back but not both at same time. Repair attempt failed. Need to go back with it.