Its power lock on the rear door went wrong, but got it replaced for free from the dealer.
No problems.
Drinks gas more than a Civic - gives me around 25mpg.
Its seats are not that comfortable for long drives.
Trunk has very small opening. Sometimes it's difficult to put things in it.
Overall a very good car. Extremely reliable. With a good sound system.
The Altima is a larger car than the civic, of course it doesn't get the same gas mileage. The Sentra is closer to the Civic's size. A lot of these posts have to be taken with a grain of salt.