Print it, take it to the inspection bay, and don't pay until every box is ticked.
Start under the bonnet, cold. Listen for ticking on first crank, check the oil cap for mayonnaise residue, and feel the radiator hose for soft spots.
On the road, accelerate hard to 80km/h and lift off — a healthy automatic should hold the gear for at least two seconds before downshifting.
Finish with the underbody. Fresh undercoat on a tokunbo car is almost always hiding rust or a previous frame repair.