Test drove a 2004 base Crossfire with the 5-spd automatic
run, don't walk away from this car.
Some earlier XF's had an issue with the Auto Tranny where it would literally "leap" out of drive into neutral.
When Jeremy Clarkson reviewed the Crossfire on Top Gear, James May drove it also and found that the test car had this exact same problem.
My best advice is to stay away from this particular car, it is a lemon.