Komenda led the development of successive versions of the Porsche 356.  He also designed the bodywork of the first large-capacity Porsche, the 530.  It was largely based on his post-war design for the Porsche 370.  Two prototypes of the 530 were built.

In 1953 Komenda designed the bodywork for the extravagant Porsche 550 Spyder.  Serial production of the Porsche 550 Spyder began at the end of 1954.  

Komenda designed the world-famous bodywork of the ‘American Roadster’, also known as the Porsche 540 Speedster, which made its debut in September 1954 on the recommendation of American Porsche importer Max Hoffmann. It was described as the ‘fresh air legend’ and went on to become the most loved and cheapest design from the Porsche 356 range.