The Real Reason Why Porsche Changed the 901's Name to 911
Porsche says that there was a practical reason behind changing their original 901 designation to 911 in 1964. But it doesn't make sense.
KhodroCar - Porsche claims that when Peugeot raised a hand about the trademark issues surrounding their original 901 designation, they already had the 9, the 0 and the 1 numbers cast in volume, ready for series production. So, in order not to waste their gold-plated badges once they have decided to honor the French request, Porsche simply used a pair of 1s to end up with 911.
But this begs the questions: why didn't they go with 910, recycling all those zeros as well? Of course, there was the 910 race car that debuted in 1966, so perhaps the company already had the name reserved.
In 1964, Porsche only built 235 911s, staring on the 14th of September. Only the first 82 models were produced with the type designation 901, and none where supposed to get out of the gates of the Zuffenhausen factory. Of course, some did.