I believe the correct answer is 2, twice. In 1930 he was driving with a friend when a trailer truck collided with his car, however the driver of the truck narrowly avoided completely crushing the car whenever he hit the brakes. The second time was the "July 20th Plot" whenever members of Hitler's general staff plotted to kill him and snuck a bomb into one of their meetings setting it off. Hitler survived because a table leg blocked a majority of the blast that would've killed him, and he came out almost unscathed.
