Bex 
2007 Nissan Sentra Sedan 2.0 S 4dr Sedan (2.0L 4cyl CVT)
Mechanically sound, but...
 Car is comfy, roomy, but I too have had some problems. Rotors had to be turned around 7000 mi, tires replaced at about 26000 mi, all the scratches on the plastic bits like a lot of people mentioned. My biggest complaint however, is both the driver and passenger seats had to be replaced by the dealer due to some pretty nasty squeaking noises. Small, but kind of annoying and time consuming.