Loud rattling in engine compartment. first time we took it in they couldn't duplicate. Found out it only occurred when the A/C was on. Took it back in week later and called mechanic out. He said it sounded like the compressor was falling apart internally. They replaced it. Picked the car up and it started making the same noise on way home. Took it back. they then said if was the pulley system. Had to order that of course so they kept if for 4 days. Picked car up after they "tested" it - had to because we took it in with a full tank of gas and it was on fumes when I picked it up. Got home to pick up wife and go to store and guess what? As soon as I started it, same damn noise. Took it back in AGAIN and after a day they said they had to send the information to Nissan for a fix. Here is it 2 1/2 months later and we're still driving the car around with this noise with no fix in sight from Nissan. Also have had problems with both front seats with the drivers seat still not fixed. got a lawyer and going to take it in one more time. you should not have to put up with kind of stuff with a new car. This car has spent more time in the shop that all the cars total i've owned in the past 15 years. And that's no exaggeration. I'm never buying a Nissan again that's for sure.