Porsche 901 was the original sales description of the Porsche 911 in its presentation at the Frankfurt Motor Show in 1963.
On September 12, 1963, the new Porsche was presented at the Frankfurt Motor Show for the first time presented to 901, and in October of 1964, also presented at the Paris Motor Show, where the French car manufacturer Peugeot - which since the 1920s, the rights to all three-digit reference numbers with a zero in the middle for automobiles had protected it - became aware of the use of a protected designation of his model by a third party. Porsche responded then and changed the name in 911, had been able to settle in 1964, however already 82 copies of a 96 kW (130 hp), air-cooled six-cylinder boxer engine equipped and in the base price 21,900 DM expensive 901 Coupe until the fall of the year.
This naming convention, which made it all the other automakers nearly impossible with a three- digit combination of their models - if it contains a zero in the middle - to denote concerned analogy further road certifiable sports cars like the Porsche 904, which was sold as Carrera GTS, and the Porsche 906, which was given the name Carrera 6. The Porsche 907, Porsche 908, Porsche 909 was a pure race car, however, not affected by a likelihood of confusion with Peugeot's road cars and thus could compete in races under these terms.