Porsche designed the Austro-Daimler Prince Henry Trial race car, which achieved considerable success in motorsport events. This established Porsche's reputation as a designer of high-performance vehicles.

The Sascha racing car, designed by Porsche, won the Targa Florio race in its class. This victory further solidified Porsche's position as a leading automotive engineer and racing car designer.

Porsche designed supercharged racing cars for Mercedes-Benz that dominated motorsport events. These cars were known for their exceptional power and reliability, contributing to Mercedes-Benz's racing success.

Porsche's experience in designing high-performance racing cars influenced the design of the Porsche 356. The 356 inherited many of the design principles and engineering solutions that Porsche had developed throughout his career.