All very good comments. If someone stuck a magnet to my car and scratched it, I would be pissed. They sell bondo checkers with a nice soft plastic backing so you dont scratch the car as you go over it. Maybe look into that, or you can just knock on the car with your knuckles and it should suffice.
Give it a good work out, and see if it heats up...If it runs over 100 degree C dont buy it, chances are its been over heated before.
A benz HAS to be driven or it will DIE, so watch out for really low annual mileage vehicles like what was stated earlier
No Benzes in the stable at the moment, but itching for one again.
Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 300E Amg Hammer 88k mi sold
1992 500E 156k mi sold