 I bought my 02 altima in 2005 with 26k miles. Loved it at first; did all the recommended maintenance; highway mpg 26 but it seemed like I was always spending money on things going wrong that never occurred with my family's hondas and toyotas. My catalytic converter was replaced and less than a year later the engine light came on signaling it needed to be redone. My car also wouldnt start and I got a new crank shaft sensor and that took care of the problem for a few months until it happened again. Got another crank shaft sensor and cam shaft sensor and it still wouldnt start regularly! Finally the mechanic said I needed a new gasket which could cost $2500. I traded it in for $2k with 114k mil