 So I bought this car after having a Cobalt SS. I loved that car and I wish I'd have kept it. I've put a hell of a lot of miles on it in the two years I've had it, but it hasn't held up to any standard whatsoever. I've had the a/c system replaced three times, the compressors are pieces of junk. The sub woofer for the Rockford system is made of paper so it's extremely easily blown. The standard brake package stinks.  Honestly the only reason I got this car is because it was the only Sentra on the lot that had a factory moonroof in it. Oh, and watch out around 70,000 miles the motor mounts just randomly break.