The rattling is driving me freakin crazy
 

I've got a rattle underneath the car that is constant (well I think it is underneath) when the car is in gear and cruising. It goes away when I take it out of gear and coast.

I've got 1700 miles on it. It was not there in the very beginning.

Ugh!

No. 100% stock.

Go to the dealer, maybe the exhaust shrouds are loose

Could be the rear hatch! Mine rattles on deceleration.

yea id take her in....

Maybe the clutch chatter?

Warranty, Warranty, Warranty. Use it! That Nismo wasn't cheap. Have the dealer figure it out.

Mine does this too... I think this is normal on deceleration for this drivetrain from other posts I've read. Other people refer to it as "rasp" but it sounds like a slight rattle to me. On my vehicle, it goes away (or I don't notice it) when it warms up.

Mine to gets worse as it heats up.

Exhaust heat shield.

Yeah like everyone else said, take it in to the dealership.

Keep us posted, interested to see what it is

It's probably the exhaust if it's a rattle like sound (like a rock in a can or something).

Probably a lose bolt or something. Just take it in to nissan, will probably take 3 seconds to fix on a lift.

Lol, get a loaner for a day or two

...and have fun with the Sentra.:tup:

Found the rattle...
 

It's the stick!

The rattling is coming from the stick shift. To really get it going I get it into 3rd and bring it up to 5k rpms and viola, the rattle is there, sounding like a russian roulette wheel.