Chart by Barry Lee Brisco based on data from Brett Johnson
This data is drawn from Brett Johnson's The 356 Porsche: A Restorer's Guide to Authenticity (1997). By showing the production numbers in chart form, it is immediately apparent that Porsche experienced extraordinary growth in almost every year, with slight production decreases in only three years: 1952, 1957, and 1962. A table showing the data is at the bottom of the page, below the chart. [Confused about the various 356 models? Go to 356 models by Year]
Analysis of the data shows that cabriolets comprised a higher percentage of overall production in the early years compared to later on. For example: 31% in 1951, 63% in 1952, 30% in 1953, yet only 11% in 1963 and 14% in 1964. The automotive market's love affair with open air motoring was clearly on the wane, and with the introduction of the 911 in late 1964 and the end of 356C production in early 1966 (the 10 Dutch Polezei cars), Porsche was for the first time without a convertible model.
Notes: the 16 America Roadsters built in 1952 are included in the "Speedster/D/Roadster" production number data line but the chart scale is not sufficiently expanded to make them visible. No attempt is made to show 1948 and 1949 production numbers, which were very low . Numbers are not given by model year because of the difficulty in determining exactly when model years started: in the early years Porsche did not keep good records and new model year start dates varied significantly.
Questions or comments, please email to Barry Lee Brisco, Website Technical Editor, firstname.lastname@example.org