vtagirl 
2003 Nissan Altima Sedan 2.5 4dr Sedan (2.5L 4cyl 4A)
Mechanical mess
 This car looks very nice, but is a mechanical nightmare.  Every sensor on this car starting going bad at 50k and catalytic conv at 80k.  Nissan said cat ruined engine and needs a new engine (bad placement of cat).  Lots of other people with same problem...would not recommend this car.  Also own a Infiniti G35...no problems..think the problem is with set up of the Altima.  If your under 80k Nissan will only fit cat, not your engine :(...They know about the problems but don't care.