ran a carfax for a 97 nissan maxima i was looking at and it says it failed the emission inspections july 2002. the guy is asking $7500 for a maxima with 80k miles, abs, bose system, leather so i think its a gle. things that were bad on the carfax was it was a lease vehicle, he is the 2nd owner, and the failed emission inspection. should i even bother with this car? carfax says a car fialing emission inspections means the engine may be going or something.