yeah i did a carfax on my car, it dosnt tell you things the driver dosnt report, like i found out my whole driver's door and the panel behind it were repainted. could never notice but i had an inspection done to my car for an aftermarket warranty, also, i didnt do any research on my 04 and afterwards i found out g35's had window problems, my drivers side window gets a lazy motor every once in a while and my pasanger side has clipping problems, when ever i close my pasanger door, the window rolls half way down. make sure these things dont happen. play with EVERYTHING. i also didnt play with everything and my tilt control on my seat dosnt work. play with EVERYTHING is my only advice. if your spending 17k on a car you damn well better see if everything is working.