One problem related to engine cooling system has been reported for the 2008 Nissan Altima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Nissan Altima based on all problems reported for the 2008 Altima.
Rattling noise coming from underneath the car. I question this everytime I take my car in for service back to 2008 and everytime I get the same answer "it's normal, it's just the heat shield plate heating up and cooling down. It doesn't affect the safety & function of the vehicle and there is no fix for it". It's amazing I paid $30k for a car that rattles on regular basis and there is no fix for it. You would think after the many complaints on this Nissan could atleast come up with a fix! they say it does not affect the function/safety of the vehicle but I beg to differ, I get hesitations when the accelerator is pressed. If this was "normal" then every car sold would make this noise but they don't so it's obviously not normal and a problem.