After the war followed again an intensive phase of engagements in front of the camera and he impersonated numerous smaller roles in popular productions.
The technical revolution in the film business with the development of the sound did not affect his career.
Towards the end of his career, Ehmann would also appear in several television films for German and Austrian TV.
Ehmann died on November 1, 1967, at the age of 85, in his home town of Vienna. He is buried in the Zentralfriedhof in Vienna.
The actor Karl Ehmann belonged at the beginning of his film career to the regular cast around the directors and producers Jakob Fleck and Luise Fleck Kolm and took part in numerous movies.