Purchased a NAH in late 2009, and it just clocked 36,000 miles.
It has been a great car.
Although the MPG not quite as high as the Honda Civic previous car, the joy factor with this car is much higher.
Very comfortable, solid handling, very peppy, and better in snow.
Averaging about 35 MPG in NH summer and 31 MPG in winter -- EVT takes quite a while to activate in winter due to battery temperature sensor.
Make sure there is a Nissan Hybrid authorized repair technician in your area; normal technicians are not allowed to work on NAHs.
Screaming deal with $7,000 off list plus (now expired) $2,750 federal tax credit.
Excellent climate system.
Keyless ignition is nice (though with NAH it is possible to walk away from an operational vehicle and not realize it is running).
Good steering feel, but not as crisp as European cars.
Base model is very well equipped.
Excellent suite of safety features, including stability control, ABS, etc.
10 year warranty on entire hybrid system (Toyota technology).
This is primarily an Altima S with a Toyota hybrid system tacked on, rather than a hybrid built from the ground up.
I would have preferred more MPG and less performance -- don't need 0-60 in 7.8 secs.
Stock sound system is OK, not stellar.
Small trunk due to battery system.
A small refrigerant leak in the A/C system has been the only major problem.
TPMS sensors are a pain.
Back seat roof low for anyone over 6'.
Relatively low production -- worries that it may become difficult to service.