Dont' rely much on the carfax, there might be a problem that occurred lately that pushed the owner to sell his car. TRY to test drive the car as much as u can, put the gear in a hard test specially in a steep hill. notice the smooth gear transition ( you need to replace tranny oil anyway above 100.000 miles), watch for the temp gauge for overheating. thoroughly try power windows, handles, moon roof. Search for oil leakage underneath. Some failures might be hidden and only you'll discover this latter after you purchased the car in a matter of days